Has anyone signed up and hooked up on the new plan T-Mobile just announced called Away Plan for RV users and travelers?

So we were getting ready for a 4 month motorhome trip and wanted to use our Gateway router tower to get Internet.   Got an email 3-4 weeks ago announcing that on May 8th T-Mobile was introducing Away Plan which would travel with you type tower and could hook up at locations with service anywhere in the US.   Sounded perfect till I tried to sign up.   Called 3-4 times to Customer Service and never did anyone who answered know anything about Away Plan.   One rep. said she signed me up and all was good.  I wasn't.   The last rep. admitted that they really didn't have any way for me to sign up.   What is going on?  I still want the service so maybe T-Mobile people could text me or something.   I would assume they would like to do this since the Away Plan is much more expensive.