I have also noticed a big difference in support provided here compared to the authorised sellers. Support on this forum is one of the best (if not the best) for Android head units.
However, the seller support is extremely poor - long waits, extremely hesitant in fixing issues (with the threat of sending the unit back, often costing 40-50% of the unit cost, when it would be cheaper to just send a replacement part), providing correct harness when wrong one is sent. Even when I was willing to pay for the replacement part, they would often say it needs to be sent back to China for authorised repair (even for something as simple as replacing the screen). In my case, I had to open a dispute to get any reply from the seller and send the correct parts. Once I brought up these issues, the seller became distant and replied every 3-4 days and 1-2 messages at a time even when I would reply promptly.
The seller is one of the AliExpress stores on the list of authorised stores on the forum (all of them seem to operate under the same business licence).
