A little late to update...
My comply foam tips arrived and I tried them out tonight.
First and foremost, they are immeasurably more comfortable than apple’s silicone tips but I have an issue with the AirPods anyway.
I may or may not have a defective right AirPod pro. It was difficult to seal it with the silicone tip and same with comply foam tip, did not resolve the issue. The left AirPod pro seals good with silicone or comply. I followed comply’s instructions and many times tried to “adjust” the pod but did not seal once.
Has anyone had an AirPod replaced that wouldn’t seal? I have AppleCare+ but I think normal warranty should replace it.
Have a look at this thread: https://forums.macrumors.com/thread...-not-working-not-the-only-one.2208392/page-34
Try the Blu Tack and/or sucking on the inner grill. Worked for me.