It's being reported elsewhere this morning that the .obs files are generally not being written. As was the case with the beta. With the beta, the problem was reported to Autel and despite the over 6 months between beta and official, they did not fix it. In earlier firmware, they went back and forth a couple times with this same problem. Doesn't give you a lot of confidence.
If you just do RTK, and the accuracies are working out as expected, you should be okay. Fallback to ppk is not an option without the .obs though.