I have the same issues as noted on several other threads. We have the MPPT 100/20 with the MPPT control. The first control ordered earlier this year showed "connecting" after a week or so of being installed and was replaced under warranty. The replacement did the same. Now the third unit, which the supplier said they updated before shipping it to me, now also simply says "connecting" after a week or so of being installed. I would be very grateful if Victron could please advise a final solution as 3 controls haven’t worked since bought new.