Hi,
thanks for your post, and sorry for the trouble.
No, re-installing an old version is not possible and not recommended. Instead, we should try to find out what’s causing the problems.
The first step here should be to re-install TablePress from a fresh download, to make sure that nothing is corrupted (e.g. because some files were not copied during the automatic update for some reason).
If that does not help, I’d like to take a direct look at this on your site. Most likely there’s a JavaScript conflict somewhere then. In order for me to do this, please send me the details to a temporary admin account via email (the address is in the main plugin file “tablepress.php”), and I’ll gladly check things out.
Regards,
Tobias