For those gettng dtabase errors, I fixed it here:
https://vborg.vbsupport.ru/showpost....5&postcount=55
Basically the code is not finsihed yet and the install script doesn't add a few neccessary tables.
Don't mean to be harsh but if oyu do not understand how to removed tables from phpmyadmin, you probabbly shouldn't install addons without making sure they are working first.
If the author doesn't fix this today (I am sure he will), I will see what i can do to make an uninstaller for the mysql end, even if a crude one.