The issue you originally reported would not have been caused by a failing database table. It was an authentication error which strongly implies something, somewhere changed.
Interestingly, there are other signs of strange things going on.
Is this anything to do with the merging of one site into another? I notice one of your sites is closed with a message to that effect.
I think you need to slowly analyse what changes you have made to either/both sites and attempt to backtrack to see what has gone wrong somewhere.
According to our records, the other site now has a board URL of bizdustry.com. Is that expected?
As for the nav bar and add-on names not displaying correctly, this implies that the data for these is no longer present. The phrases for the nav bar would come from a special phrase cache that is written out to the file system under
. Is it possible this file has been somehow overwritten?
The add-on names issue is essentially the same thing but in a file called admin_navigation.php.
You can attempt to rebuild the phrases by rebuilding the master data by going to https://bizdustry.com/install
The board URL configuration in Setup > Options > Basic information > Board URL needs to match your site. So when viewing bizdustry.com it should be
. If it is set to anything else then you will get the board URL mismatch error.