You don't have to send file. Copy from browser and paste into NotePad/TextEdit locally. Then do search and replace with local text editor to strip out info that needs NOT to be shared (ip addresses/urls). Save the edited text file locally. Come back to this thread and paste the info in the text file in a response.
Well, in sleuthing ... got a 404 error when clicking on the maintenance mode link that displayed in the upper right hand corner. Was looking for a 'xxx-admin' (not really the name seen) folder and couldn't find it.
So something is mis-matched there.
You did leave the salt line in config did you not?
Have any tool to browse the DB on new system? Is there a mdl_user table? One could seek their own login name in that table to see if it's there.
If you are using vi you have command line access but probably only to your virtual space.
One may not have to use VI on a CentOS box IF provider installed a text editor called 'nano' - which is more user friendly than Vi (at least one sees old WordStar like menu at the bottom - dating myself there!).
Since you do have command line, don't use VI to open any server logs ... use the command:
more /path/to/apache_logs/access_log [error_log] if that's what they are named on your virtualized/multidomain system.
Also suggest turning on debugging via config.php file.
http://docs.moodle.org/23/en/Debugging
'spirit of sharing', Ken