Settings, apps, Tapatalk Pro, open links by default, add a link, wait ages for a list to populate, scroll through thousands (literally) of links to find the right one. Tick it and click add. Now the links open in Tapatalk.
Since the stable build of A12 on my Pixel 6 Pro, I haven’t been able to open Android Central forum links in Tapatalk. I read something somewhere about A12 changing this. So this morning I went to sort it out in App settings. This is what I had to do.