“You have not proper fill fielda!”

Regarding Availability Calendar. I have a Multisite wordpress with 4 subdomains that point to 4 different languages. I succeeded to setup the first one. When i started setting up he second and filled the first category this message popped up, even tho i fill in all input boxes; “You have not proper fill fielda!”. How can I solve this?

Plugin is visible in all network sites, worked on the first one, but when I try the next it goes like this.

And as a solution… The plugin is not fetching olready existing db entries.

Ok, I solved it by deactivating in network and activating each site individually.

The page I need help with: [log in to see the link]