I am trying to set up an UBER app on my new devise. I am trying to retrieve my old acc...

I am trying to set up an UBER app on my new devise. I am trying to retrieve my old account and use it , but no passwords work. I provided Uber with my g-mial info, OR tried to go with my social FACEBOOK page. THE registration goes into a dead end, because : *) IT says "I have opt out receiving text messages" and asks me to send "START", which leads me to another system message when i provide my phone number : "your phone is not monitored in our system" . SO HOW would i change from "not receiving messages to receiving them?" NEARLY half a day lost on no result in this never ending loop. Please help before i give up and go to LIFT instead. I LIKED using UBER and was a loyal customer for a long time.