TMo Home Internet vs Ring

TLDR: what suggestions for an inexpensive, battery operated, doorbell/camera system compatible with TMo do you have, OR a cost effective solution to the Ring issue with not recording video? Several months ago I moved out of a complex controlled by a particular ISP and was grateful to not only save money, but get more reliable/faster internet with TMo 5G. It's been great; gaming, streaming, compatibility of devices, etc were fantastic despite other ISPs claims. All of my cameras (3 Ring, 1 Blink, 1 Furbo, all with subscriptions) were working great, which is awesome because I rely on them for safety of my home and my elderly dogs. About 3 weeks ago, Ring stopped recording and giving live access. I did all of the troubleshooting available online and through my own research. After almost 2.5 hours on the phone with Ring tech support yesterday, I was told this is a known issue between Ring and TMo (my Blink and Furbo have no problems recording or live) and there is simply no fix available. A few other Reddit posts confirm this. I'm expected to just keep paying my Ring subscription without the availability of the service, or even basic camera functions that don't come with the subscription. Multiple of my neighbors have the same doorbell and stick up cams from Ring as I do, with TMo as their internet provider, and have no issues. My only other ISP option is not one I want to go back to. I don't really have several hundred dollars right now to purchase a whole new camera system, but it is a safety necessity for me, so I am hoping anyone might have found a work around for this or has a decent system recommendation similar to Ring's battery operated options that will not cause me to invest another few hundred dollars in cameras.