Has anyone experienced any problems with Profoto Air Sync Transceiver? I have two of them and two Air Remotes which I use rarely, once a year. Last time I used them, a year ago, all worked seamlessly. Few days ago I tried to do a comparison vs my Elinchrom Skyports vs Broncolor RFS and found out that a Profoto Air Sync Transceiver although seemed working properly (lights, beep, channel, new batteries) wasn't triggering the other Profoto triggers nor my Profoto 8A generator. I've tried many times, no success. I searched the internet and found nothing, seems that none has ever had problems. Any suggestions?