You should have received an email with instructions on how to make the switch which will include your unique single use coupon to maintain your current rate (if applicable). Please note: this email should be hitting your inbox on Monday October 24th around 11:00am PST.
Here is how to track down the email:
Subject: TBM Mobile App EARLY ACCESS: Code inside
From To Be Magnetic: firstname.lastname@example.org
Still can't find it? Feel free to email email@example.com for further support!