I tried 0000 and could not unlock the channels. I will try a clean install and rescan, but that is a long, involved process for me. That is why I was looking for some other solution

since I updated to 2.2, I have a problem with locked channels that I did not have before. What is the password to unlock/unblock channels? Why was this default changed? How do I ensure that it does not revert the next time I scan?