Nothing changed, node down last two days. How can i fix or find out why?
First of all better assume that something has changed otherwise it will be hard to find the problem. Common mistakes are port forwarding in the router is now pointing into the void (internal ip has changed) or your external ip has changed but your dynDNS entry isn’t updated or expired or something like that.
I would try restarting it and see if it starts working. Can check the logs. Honestly, I have two nodes that I haven’t touched in over a year. They continue to just work. So, if yours isn’t working, something changed or you’ve had some kind of hardware issue.