Cannot send rewards to friends

Lampo

I don't know why, but since few days I am unable to send rewards to Facebook friends.
When the little Facebook message page opens, even if I click on "send", it does nothing. When I click on "cancel", instead, it works and it cancels everything.

Twoslot

Having the same problem. The send button just gets a yellow line around it, like the link is broken.

Lampo

Fixed!
Thank you!