Vishnu

Try changing the permissions on the wp-content directory to 766. If you still have problems, try 767, 775 or 777. Once your upgrades are working, change the permissions on wp-content back to 755 again and check that everything still works OK.
https://codex.www.ads-software.com/Changing_File_Permissions

Write new posts for your WordPress blog, edit content, and manage comments with built-in notifications, all on your Android device.

check this

https://www.ads-software.com/mobile/

website not opening

check this for solution

https://codex.www.ads-software.com/Common_WordPress_Errors

Use seo yoast plugin , in that plugin there is option to create and manage big sitemaps

Its visiable because you are admin , Its still visible after logout because of cache , clear your browser cache or server cache it will not apper to you again.

Use Seo Yoast Plugin
Verfy your website in google webmaster tools

use 301 redirect and
Notifying Google About the Change using web master tools

Open the .htaccess file and paste the following code at the very top:

#Options +FollowSymLinks
RewriteEngine on
RewriteRule ^(.*)$ https://www.newsite.COM/$1 [R=301,L]

Replace newsite.com with your domain in the above code.

You can also use cdn for images and files to speed up your website .

just add “noindex” tag in img src and i hope that will work

also check

Also check out these:

https://www.ads-software.com/extend/plugins/wordpress-https/

https://codex.www.ads-software.com/Administration_Over_SSL

Have you changed link in Settings > General.
Ensure that the WordPress Address (URL) and Site Address (URL) are https. If not, add S after http to make https and save it.

use yoast seo plugin it will solve your issue

disable or remove all plugin , looks like u have installed some maliculous plugin , also scan your website for harmful script.

@james i will do it as u suggest me i am just a beginner ??
will not do it again

will do only when there is detail tutorial about any issue which is not mentioned in wordpress codex