Can't connect Google Mini to T-Mobile Home Internet

Stjon wrote:

I've tried every recommendation in the book restarting the "T-Mobile" device, the mini. It will go through the entire process of adding the device and at the very end, after it's verified the connection, it suddenly says it can't connect to the network and fails the addition.

 I also tried most of the suggested fixes and none worked for me, so I deleted and reinstalled the google home app. Then I setup a home in Google home and connected a none google device that was working on my T-Mobile WI-FI in this case a robot vacuum. Now that my Google home had a device associated to T-Mobile Wi-Fi, I was able to connect Google mini and Google home speaker,