As far as I can see there is a bug in the contact form of the avia layout builder: I created a contact form with about 17 fields and corresponding questions for the fields. It seemed to work fine but after submitting the form it showed, that some fields were missing in the incomming email.
It took me some time to find out that it had to do with full stops or dots in the title. I had several full stops in combination with shortcuts like “bzw.” or “z.B.” or “bspw.”. All these fields were not sent. After avoiding all of them everything worked perfectly. But of course it would have been much easier if this system would accept full stops. so maybe you can fix this with the next update.