I was able to get past the first problem which was the "getavatar" duplication error (I commented out from the theme's file)
Nonetheless I'm unable to get into the dashboard - getting file-not-found link errors. I'm not sure what's happening. Upon each login attempt, It sends me back to the home page. I've also seen "you've upgraded already", again with a loop back to the home page.
I understand that this link was corrected, but it's broken again.
https://wordpress.org/support/topic/read-this-first-–-wordpress-42-master-list?replies=5#post-6860958
Any help would be most appreciated, as it's quite urgent :(