Cannot connect to multiplayer (cross platform)

My friend has tried to invite me to his server and it will only say "connecting to multiplayer server" but it won't load me in. Or it'll say "Locating server".. and I'll be sitting on the screen for awhile and it won't let me in. This just started happening last night. I play on Windows 10, cross platform with Xbox. I have the bedrock edition. I have tried restarting my computer, restarting my wifi, uninstalling minecraft and reinstalling... It can't be my friends world either because 4 other people play on the world (Xbox though) but for some reason I can't join? I've also tried on different consoles including my tablet and phone and it is doing the same for both. As I said, it just started happening last night and was working perfectly fine for the past month. Please help. Thanks!