Chamberlain garage openers can't connect once again

iTinkeralot wrote:

It is curious how sometimes a solution works for one user and not for another. Sometimes there are external influences that change the equation it seems. I have a Lift Master garage door opener but I really don't have any desire to have it connected to the internet. If an additional router is connected properly so the communication is resolved that is just as good as any in my mind. Getting a strong stable 2.4GHz signal to the garage door opener is the main thing. If the Chamberlain components have an issue with the T-Mobile gear using another router that does not have a cellular radio on the other side of the GW interface makes sense to me given the T-Mobile GW offering the cell number. Maybe others that look for answers can find some clues in the conversation that helps  them get the issue resolved.

I have one Chamberlain garage opener that is about 7 yrs old and I have one that is 2 years old. Both work fine directly connected to my TMO router's 2.4 GHz wireless so there is nothing on the TMO router that is preventing anything. I had both Nokia and Arcadyn and no problem with either. I do separate my 2.4G and 5G networks with different SSIDs.

Having said that, you linked to a hub that is a separate device that just mimics the remote garage door openers via wireless control so I have no idea if that works with TMO routers or not.

Technically speaking, there is no distinction between a router's IP that is from a cable modem versus 5G/LTE modem. What is different is that geolocation of those IPs. On a cable modem, it generally matches the area that your modem is physically installed. On a 5G/LTE modem, it can be very far from your physical area.

The problem with Chamberlain could be that it uses geolocation as a way to register the opener to its' app servers. I could see a situation where you had it working on your cable modem, then you changed to a TMO router which showed an IP that was not in the same geolocation as when registered. If that is what the problem is, it is a simple matter of removing the openers from the web app, then re-adding them as new garage door openers. This would update the geolocation.