Friend get's booted off after a few minutes

[Official-V-Zer0]

So me and a friend are using this mod to make some structures for a project for a modpack (https://modrinth.com/modpack/medieval-adventure-pack) which I made. I set it to be on a specific port, which I let through the firewall. We used bot with UPnP and without, but after a few minutes of him moving and building he gets timed out without further error message and looking in the logs do not help much.

Update: using random port doesn't let him join at all and has him stuck on joining world until timed out.

[Gaming32]

Can you please send the logs?

[Official-V-Zer0]

2024-09-29-1.log
2024-09-29-5.log
2024-09-29-4.log
2024-09-29-3.log
2024-09-29-2.log

These are the 5 logs from my friend today where it happend

There's also the issue with him not finding the server when I restart it, as well as the UPnP text in the corner being red when we both have it on

[Gaming32]

The UPnP text being red means your router doesn't support UPnP (or has it disabled).

[Official-V-Zer0]

Ok, but any idea about why he gets randomly timed out and unable to rejoin the server until we both restart the game?
2024-09-29-7.log
2024-09-29-6.log
Two more logs

[Gaming32]

Can you please send your logs?

[Official-V-Zer0]

https://mclo.gs/yP9D3DV
https://mclo.gs/qPGU82v
https://mclo.gs/3mq1PU0

[Official-V-Zer0]

Check up. progress on finding the issue?

[Official-V-Zer0]

Another check

[Official-V-Zer0]

Hey, any progress?

[Gaming32]

I have no idea to be honest. Stability updates are coming soon. Please stop spamming the issue tracker.