followers vs users vs subscribers

I am a new blogger.I don’t fully understand the differences between follower vs. users vs. subscribers.
What I want to know is: who is subscribing to the full blog, (vs. to one post)? Did I set up too many ways to follow? Some subscribe functions (JETPACK SUBSCRIBE) do not appear to be working.

website is https://www.rinocracy.com

Places to FOLLOW are listed below, but what option leads to what in back office?
1.) JETPACK BLOG SUBSCRIPTION WIDGET Box is in right side bar of website: SUBSCRIBE to blog by email. (I tried adding my second and third email address (heatherlouiemac), but did NOT receive a confirmation, nor do I see that email address in the back office.)
2.) FOLLOW BUTTON at bottom right of website. That works, EXCEPT the reader gets error message when I enter an address:
ERROR: “This is somewhat embarrassing, isn’t it? It seems we can’t find what you’re looking for. Perhaps searching, or one of the links below, can help.”
3.) LEAVE A REPLY box after each post, where reader can reply and click box to receive new post notifications by email. (FOLLOW MY BLOG POST). These people are not necessarily subscribers? Just followers of one post?

SO WHEN I TRY TO SEE HOW MANY SUBSCRIBERS
1.) USERS> 4 = I have 2 Admin (correct) and 2 subscribers.
2.) FOLLOW PLUGIN. In back office, left panel, it lists 11 SUBSCRIBERS, which includes the 4 USERS (Subscribers and Admins in #1 above), plus others.
3.) Under SETTINGS > FOLLOW MY BLOG POST: It lists USERS of each post…
4.) UNDER JETPACK > SITE STATS > SUBSCRIPTIONS > FOLLOWERS, there are 11 different followers than in #2 above.

What do I need to do to make sure:
1.) JETPACK BLOG SUBSCRIPTION WIDGET is working, both in adding new subscribers, and sending them a confirmation email.
2.) To get all subscribers in one place

I did a compatibility test…. TEST: Integer Tests

Array
(
    [$value = "d0000000";] => (string) d0000000
    [$value = hexdec( $value );] => (integer) 3489660928
    [$value = abs( $value );] => (integer) 3489660928
    [$min = 0;] => (integer) 0
    [$max = 61;] => (integer) 61
    [4294967295 + 1] => (integer) 4294967296
    [$value / (4294967295 + 1)] => (double) 0.8125
    [$max - $min + 1] => (integer) 62
    [($max - $min + 1) * ($value / (4294967295 + 1))] => (double) 50.375
    [$out = $min + (($max - $min + 1) * ($value / (4294967295 + 1)));] => (double) 50.375
    [$out = intval( $out );] => (integer) 50
    [$out = abs( $out );] => (integer) 50
)

TEST: wp_generate_password()
Array
(
    [0] =>  1 ->  1:E
    [1] =>  5 ->  5:3URJd
    [2] => 10 -> 10:Z6o47UkKSq
    [3] => 16 -> 16:INSFbLrhUWw6ehHN
    [4] => 32 -> 32:ZtqxilAprBiCbQKoJ4uziVFzCsenbVZY
    [5] => 32 -> 32:pnCF7qTU40TaBUf3G6PonbRUasy2QeTK
    [random_password] => abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789
    [steps] => Array
        (
            [0] =>  45 -> T
            [1] =>  24 -> y
            [2] =>  33 -> H
            [3] =>  61 -> 9
            [4] =>  36 -> K
            [5] =>  52 -> 0
            [6] =>  49 -> X
            [7] =>  23 -> x
            [8] =>  13 -> n
            [9] =>   9 -> j
            [10] => 30 -> E
            [11] => 10 -> k
            [12] => 57 -> 5
            [13] => 13 -> n
            [14] => 13 -> n
            [15] => 50 -> Y
            [16] => 45 -> T
            [17] => 48 -> W
            [18] => 39 -> N
            [19] =>  2 -> c
            [20] => 26 -> A
            [21] => 41 -> P
            [22] => 43 -> R
            [23] => 17 -> r
            [24] =>  0 -> a
            [25] =>  2 -> c
            [26] => 47 -> V
            [27] => 40 -> O
            [28] => 15 -> p
            [29] => 52 -> 0
            [30] => 39 -> N
            [31] => 13 -> n
        )

    [ReflectionFunction] =>
/**
 * Generates a random password drawn from the defined set of characters.
 *
 * @since 2.5
 *
 * @param int $length The length of password to generate
 * @param bool $special_chars Whether to include standard special characters. Default true.
 * @param bool $extra_special_chars Whether to include other special characters. Used when
 *   generating secret keys and salts. Default false.
 * @return string The random password
 **/
Function [ <user> function wp_generate_password ] {
  @@ /home4/fivzero3/public_html/rinocracy/wp-includes/pluggable.php 1485 - 1499

  - Parameters [3] {
    Parameter #0 [ <optional> $length = 12 ]
    Parameter #1 [ <optional> $special_chars = true ]
    Parameter #2 [ <optional> $extra_special_chars = false ]
  }
}

)

TEST: wp_rand()
Array
(
    [0] => '1d1d7b6a98546d79b8ecaec8e502b0df551310f2d736684e34d751dad927e7a0a7ec63a7be130cd98663004c46d4f235'
    [1] =>   7:532f4d64c40036689dc031eb7a36ce7a0a7e729dad157d43e486637d2f013155fd0b205e8ceace8b97d64589
    [2] =>  36:532f4d64c40036689dc031eb7a36ce7a0a7e729dad157d43e486637d2f013155fd0b205e8ceace8b
    [3] =>  44:532f4d64c40036689dc031eb7a36ce7a0a7e729dad157d43e486637d2f013155fd0b205e
    [4] =>  55:532f4d64c40036689dc031eb7a36ce7a0a7e729dad157d43e486637d2f013155
    [5] =>  20:532f4d64c40036689dc031eb7a36ce7a0a7e729dad157d43e486637d
    [6] =>  52:532f4d64c40036689dc031eb7a36ce7a0a7e729dad157d43
    [7] =>  12:532f4d64c40036689dc031eb7a36ce7a0a7e729d
    [8] =>  52:532f4d64c40036689dc031eb7a36ce7a
    [9] =>  40:532f4d64c40036689dc031eb
    [10] => 46:532f4d64c4003668
    [11] => 32:532f4d64
    [12] => 17:
    [13] => 41:2d6b7418adb6a3dd66033893f50e6d4405800f36634c71a0c3af12fa76ffdf86f76c3d975ade69c3c41bfe79dc49a1d6b53cc84e
    [14] => 55:2d6b7418adb6a3dd66033893f50e6d4405800f36634c71a0c3af12fa76ffdf86f76c3d975ade69c3c41bfe79dc49a1d6
    [15] => 26:2d6b7418adb6a3dd66033893f50e6d4405800f36634c71a0c3af12fa76ffdf86f76c3d975ade69c3c41bfe79
    [16] => 36:2d6b7418adb6a3dd66033893f50e6d4405800f36634c71a0c3af12fa76ffdf86f76c3d975ade69c3
    [17] => 14:2d6b7418adb6a3dd66033893f50e6d4405800f36634c71a0c3af12fa76ffdf86f76c3d97
    [18] => 29:2d6b7418adb6a3dd66033893f50e6d4405800f36634c71a0c3af12fa76ffdf86
    [19] => 25:2d6b7418adb6a3dd66033893f50e6d4405800f36634c71a0c3af12fa
    [20] => 42:2d6b7418adb6a3dd66033893f50e6d4405800f36634c71a0
    [MIN] => 7
    [MAX] => 55
    [ReflectionFunction] =>
/**
 * Generates a random number
 *
 * @since 2.6.2
 *
 * @param int $min Lower limit for the generated number
 * @param int $max Upper limit for the generated number
 * @return int A random number between min and max
 */
Function [ <user> function wp_rand ] {
  @@ /home4/fivzero3/public_html/rinocracy/wp-includes/pluggable.php 1512 - 1546

  - Parameters [2] {
    Parameter #0 [ <optional> $min = 0 ]
    Parameter #1 [ <optional> $max = 0 ]
  }
}

)

TEST: HTTP Connection
Array
(
    [headers] => Array
        (
            [server] => nginx
            [date] => Fri, 24 May 2013 15:01:17 GMT
            [content-type] => text/plain;charset=utf-8
            [connection] => close
            [vary] => Cookie
            [x-pingback] => https://jetpack.wordpress.com/xmlrpc.php
            [expires] => Wed, 11 Jan 1984 05:00:00 GMT
            [cache-control] => no-cache, must-revalidate, max-age=60
            [pragma] => no-cache
            [x-hacker] => Jetpack Test
        )

    [body] => OK
    [response] => Array
        (
            [code] => 200
            [message] => OK
        )

    [cookies] => Array
        (
        )

    [filename] =>
)

TEST: HTTPS Connection
Array
(
    [headers] => Array
        (
            [server] => nginx
            [date] => Fri, 24 May 2013 15:01:17 GMT
            [content-type] => text/plain;charset=utf-8
            [connection] => close
            [vary] => Cookie
            [x-pingback] => https://jetpack.wordpress.com/xmlrpc.php
            [expires] => Wed, 11 Jan 1984 05:00:00 GMT
            [cache-control] => no-cache, must-revalidate, max-age=60
            [pragma] => no-cache
            [x-hacker] => Jetpack Test
        )

    [body] => OK
    [response] => Array
        (
            [code] => 200
            [message] => OK
        )

    [cookies] => Array
        (
        )

    [filename] =>
)

TEST: Self Connection
WP_Error Object
(
    [errors] => Array
        (
            [http_request_failed] => Array
                (
                    [0] => Resolving host timed out: www.rinocracy.com
                )

        )

    [error_data] => Array
        (
        )

)

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