Yes this is becoming a problem for early adopters. Mine failed also and Tesla Service said they can't repair it and Tesla Spare Parts said they no longer stock it as a new item. I still have my Euro-adaptor and 15A single phase and 20A & 32A 3phase tails so I bought
this as a like-for-like replacement.
Looked at Alibaba and similar sites from China, but buying it with 3yr warranty and from Aussie business with 5-stars reviews felt the better choice.