Users can't add discussions to group and polls in whole social

Hi there,

in my ES users can't add discussions in groups. I checked I think every permissions - usertype ACL, group category ACL, application ACL, access ACL and user can't see tab on the left "Discussions"

I don't know what is going on, in settings everything looks fine.

Similar situation is related with polls - e.g. as Super Admin I see button in sharebox to add poll, I add a poll but after refresh, poll disappear...

I send you access to my site backend and FTP.

I'll be very grateful for your help!
Best regards!
Adam