Multiplayer

Hello, I tested the multiplayer method with my phone's hotspot and internet. My friend was connected to me and my friend was downloading addons and my world, but suddenly it was disconnected and this message came up. In the network settings, I enabled the "allow mobile data for online play" option for myself and him. This is despite the fact that LAN multiplayer should also work in offline mode, which currently only works with data. Now, except for this issue, when my internet is on and he downloads the file, this page and text come up and it crashes.

And this is despite the fact that we did not use a VPN or firewall and the internet was active and working perfectly.