Port Forwarding Randomly Stopped Working

Following the instructions from Xfinity to use their phone app to handle port forwarding (which is dumb/inconvenient in so many ways) I was able to open port 25565 for my friends and I to connect through. This was working for a total of two days before suddenly the port I had opened was no longer able to be accessed from the internet, even though nothing had changed. I have attempted to create other port forwards to no avail, I have also tried the many fixes to this issue already on this forum, but none have worked. This is ridiculous that Xfinity services are this faulty.