Minecraft Bedrock Edition - Unlinked To The World How To Fix?

A friend and i have wanted to play on their world for a long time. Joining only works if you are in the same Wi-Fi network. You can't do that outside.

We both play on the Windows Bedrock Edition, have tried a lot but nothing worked.

We both have very little idea. I still assume that you have to make some network settings with her. As soon as she was connected somewhere else, I could join.

Lanwelten can only be entered in the same Wi-Fi network. Otherwise this is only possible via a server that you have to rent. However, there are also many free providers such as aternos. Just google it.