Q: Remote app not connecting

Since the last system (security?) update last night (10.10.2 (14C1514)) the remote app on both my iPad and iPhone no longer connects. Restarted al devices (Mac mini , apple TV, Airport, iPad, iPhone) logged out and in  for homesharing, but no result. To my confusion the airport apps on my mobile devices indicate there is no airport extreme anymore... (they are very well connected to the internet though...) but the principal airport app on my Mac mini indicates everything is fine. No updates or anything needed and a good connection.

Still the remote app on iPhone and iPad cannot be used. Very annoying...

Anyone ideas?