I stopped getting points completely for daily Bing searches about 4 days ago. They don't work on Bing mobile or PC. I sent a troubleshooting request to MS support days ago but have not heard back yet.
Historically, I've had problems with Bing similar to this current issue for years. Points not accumulating or disappearing, streaks getting reset or erased out of the blue, Shopping rewards not paying out, etc. etc. MS never bothers to notify us when they're revamping/tuning rewards stuff either. The whole experience reeks of incompetence.
I'm considering abandoning Bing (and by extension Edge) altogether. DuckDuckGo doesn't pay anything, but at least its consistent and doesn't bother me with stupid AI responses.