Minecraft multiplayer no longer works?

I've been playing Minecraft online with my girlfriend the whole time in multiplayer without any problems. You with you and I with me. Both have ios and definitely the original minecraft (yellow text). We met today and wanted to play there again. The mutual worlds are also displayed… But after a little wait, the error message "no connection to the world" is displayed. Multiplayer is activated. Is it perhaps because our devices are too close or on the same Wi-Fi? Somehow it doesn't work with the LAN connection either…

What kind of devices do you have?

2 iPads both have the same / latest update both iOS

Have a look both in the app store to see if you have the latest Minecraft version. There has been a lot going on at Minecraft lately in terms of updates.

Yes we have. It worked really well before (but we were still at home there)