FREE VERSION NOT WORKING

Hello there,
I don’t usually write bad reviews but this is the only way to get somebody attention about a BIG BUG PROBLEM THAT YOU HAVE.
As soon as I activate Polylang FREE version from my website menu, both in the admin back-end and front end, both Categories and all articles related disappear.
I have switched from my theme (Astra) to another to see if it was a Theme problem, but the issue still remains even by switching themes.
Also Impossible to get any support even in forums.
I would have probably purchased the Pro version but now if this is how it works I will go for an alternative multilingual plugin.
DO NOT ACTIVATE THIS PLUGIN FOR FREE.
Thanks in advance for your time.
Looking forward to hearing from you
Regards
Alex