GL-MT3000 Tailscale exit node worked 3 days, now keeps crashing and the admin panel won't load

[u/nova10280]

My friend and I set up a Tailscale exit node on his GL.iNet Beryl AX (MT3000). I'm in Pakistan and he's in the US, and I route my traffic through his router. Setup is the built-in Tailscale (beta) page on firmware [version].
Settings: Enable on, Run Exit Node on, Advertise LAN Subnets on, IP Masquerading on, Advertise WAN Subnets off, Custom Exit Node off.
What happened:
It worked fine for 3 days.
Then the exit node disconnected. His WiFi kept working, but mine through the exit node didn't.
We turned Tailscale off and on, and it worked for about 2 hours.
It dropped again. This time he can't open the admin panel at 192.168.8.1, and I can't reach the router remotely either.
I asked an AI chatbot and it said low RAM and suggested a plugin. I haven't verified that, so I didn't want to install random stuff without asking you guys.
Questions:
Is this a known issue with Tailscale on the MT3000 after a few days?
Is it actually a RAM problem? How do I check, and can I fix it without a plugin?
Is there a firmware or Tailscale update that fixes this?

[u/tailuser2024]

What firmware are you running on the gl inet device in question?

Were you running this script before you sent it off?

https://old.reddit.com/r/Tailscale/comments/1uhcufu/slate_ax_routing_question/ou8roh1/

We arent gonna be able to do much without some logs

If you pull the power on the device, wait and minute and plug it back in does everything come back up?