Google authentification & hCard errors

Hello there word press community,
I’ve got a real nasty situation here which is freaking me out.
I stumbled over the option from Google+ to connect your G+ profile with your website, which sounds to me really nice. So I used the plugin “Google Author Link” which should supposedly work, but it didn’t.
With the rich snippet tool I get these errors:

At least one field must be set for HatomEntry.
Missing required field “entry-title”.
Missing required field “updated”.
Missing required hCard “author”.

https://www.google.com/webmasters/tools/richsnippets?q=http%3A%2F%2Fwww.antkingno1.de%2F

Google didn’t really helped me; I found many sites where the problem was handled, but since I have nearly no knowledge of codes and stuff I just could figure out that the codes I have to alter don’t look what they supposed to look.

One guy shows on his site what to look for: https://fivera.net/hatom-feed-hatom-entry-error-wordpress-solution/

For the updated error you should look for the_time, but I just found this:

<div class=”actual_post_author”>
<div class=”actual_post_posted”><?php _e(‘Posted by :’,’ThemeAlley’); ?><span><?php the_author() ?></span> <?php _e(‘On :’,’ThemeAlley’); ?> <span><?php the_time(get_option( ‘date_format’ )) ?></span></div>

And that doesn’t look nearly as the code he found, so I have absolutely no idea what to do.

I hope someone is bale to help me, since I have no idea of codes. I’ll show you the other codes I’ve found instead of him, and hopefully someone can just tell what to add to those.
Thanks in advance!

For the entry-title error:

<div class=”actual_post_title”>
<h2><?php the_title(); ?></h2>
</div>

For the author error I just found the same code in which the_time comes up like above:

<div class=”actual_post_author”>
<div class=”actual_post_posted”><?php _e(‘Posted by :’,’ThemeAlley’); ?><span><?php the_author() ?></span> <?php _e(‘On :’,’ThemeAlley’); ?> <span><?php the_time(get_option( ‘date_format’ )) ?></span></div>