Absolute_Axoltl

I've had remote access working on my plex server for years but yesterday it stopped working. My ISP uses CG-NAT but that hasn't been a problem until remote access stopped yesterday. To be perfectly honest I dont kbow how it's been working as from what I understand it shouldn't, but it has been. The server is running on an Intel Nuc that uses Mint. I've been using it both to listen to music and watch media without fault from friends/family homes and my phone remotely. Everything works perfectly inside the network but nothing remotely anymore. I've tried both with and without a port forwarding rule on my router. I have pihole running on the same nuc which I've tried both disabling and removing from the routers dns handling. I didn't think this was the problem but I at least wanted to rule it out. Im fast running out of ideas as i can't understand what's different from before. The only thing that's changed on my network is adding a new Switch 2, besides that everything is exactly the same. If anyone has any suggestions I'd really appreciate it!