Opening hours installed but not visible in custom fields

Hi there,

I've already bought Opening hours app, install by Easysocial app installer. It finished with success (tried a few times), but app is not visible in apps list, not event in page category custom fields.

I don't know what is going on. I checked many times what might be a problem, but have no idea.

I'll be very grateful for your help. I send you access to backend.

Best regards
Adam