I’ve had the same problem on now three sets of air pod pros. They work for about 3 to 4 days. I don’t think it’s the tips though.., because the new AirPods always work for a few days, the. won’t seal anymore, I think there is something wrong with the sensor that measures the fit. My hypothesis is that “junk” ( oil, wax, dirt, etc...) builds up on the screen on the outside of the AirPod pros... and then the test starts to fail. It’s a bummer , because I like them... but I’m not going or keep them if they only pass the seal test for three days. I’m pretty disappointed, but I’ll be returning these ...again. And going to move on to the Sony 1000, noise canceling, which btw actually sound better, but are a little clunky looking, and don’t have the same IP rating, so heavy workouts won’t work..but I’m done and very disappointed Apple hasn’t or won’t take care of the root cause of their Apple AirPod pro failures. Btw .. they still sound pretty good and the noise cancelling works..they just won’t pass the test. I think Apple should get rid of the “clever” test.., and then we’d be happy with the sound.