I am unable to join my friends world

Me (brkbrk620) and my friend NMR334 are unable to join each other and we were able to join each other a few months ago we don’t know what’s wrong we even tried uninstalling and reinstalling the app and we checked our profiles to make sure nothing was going on there and nothing looks like it was interfering with that other people can join us like we can join the same world of our friend but we can’t wait either directly we have to join our friends world and other people can join me and other people can join them we just can’t join each other.