I cant join one of my friends worlds

does anyone know how to help me? I play Minecraft bedrock edition and I can't join one of my friend's specific servers, I can join every other server of his, just not this one. It's stuck on generating world, locating server. I already tried restarting my laptop and I even sacrificed all of my worlds by uninstalling Minecraft and reinstalling it, and it still won't work. all I can do is watch my friends play it now, we've tried EVERYTHING.