I filled in all the necessary fields (as far as I can tell) and clicked on “submit” (which is green)… but after one second of “please wait” it returned me to the same “submit” page. I can navigate back and forward through the form but it does not seem to submit and it does not appear in the queue either. Managed to submit via iPad app instead.
We do have a glitch where you don’t get a good error message if you forget to populate the address enough (at least the first line of the address and a postcode etc, which we try to populate automatically from the map position anyway), could be that.
I had the same issue once, not sure what the cause is but clearing cookies etc seemed to resolve the problem.