As we all know, the world is running out of IPV4 addresses, Without my knowledge, My Provider went ahead and injected our entire area (country fiber service) via RF-Now Inc.
out of Virden, Mb. Anyhow they placed the entire area under a router so the entire area only presents as one IP, this caused the EXACT same problem with my offsite camera backups. I had to ask for a "direct connection" heres the funny thing, from before, through the change, and back to the direct connection, only the last Octet changed in my IP address... it sure sounds like one or both of you might need to get your provider to revert you.

Greg