As I understand from what WILLX has said, after receiving 25 notification text messages, the notification text messages will stop.
UConnect 13.19.0 - Unofficial
I posed the question because one day I noticed the app would remotely start my truck, but would no longer send me a text message to confirm.
I tried deleting the message chain, I deleted and redownloaded the app, I logged in online and deleted and re-entered contact information, I even logged a case with uconnect...NONE works.
So I replaced my cell phone with an email address and found that works, but I wanted to receive text messages. I have verizon, so I entered my phone number as an email address, email@example.com
and it is now working.
I thought I'd share in case anyone else was having this issue and I didn't want to add to the 50+ page uconnect post.