Sorry, but no.

Quite simply, they are PHP 7 errors, there is no argument about it.

http://php.net/manual/en/migration70.deprecated.php

What I posted in the third post is exactly what he has.

That's really weird because the deprecation error he's receiving was introduced along with PHP 7. Any older PHP versions do not cause such errors.

OP should reach out to the host and see what's going wrong here.

You can keep insisting this as long as you want, but the facts are they are PHP 7 errors.
No other versions of PHP generate those warnings, there simply is no argument about it.

Issue has been fixed. The hosting company had to purge the PHP files and reset everything. Now the site is working.

When I visit your site, I am logged in as you on forum home but, change to my own account when I change pages and then change to other member accounts. I have never seen that happen before.

I see this happening too. Anyone have any thoughts on why this would happen?

Caching of some sort (varnish for example).

This seems to be happening more and more, I dont know if its some trend by hosts to introduce caching, but its deadly for forums.

Ask your host to add your site to the cache exclusion list.

For aome reason this seems to not happen when using the site via mobile. It is occurring while using a desktop computer for me. Hitting the refresh button will make it come back to my account though.