Here are the steps to help parents who have unsubscribed from receiving your messages rejoin your account.
Log into the web portal at app.talkingpts.org
Step 1: Click on your class to see the student list
Step 2: Find the student of the parent who unsubscribed. Hover your mouse over the icon that says "Unsubscribed" (do not click, only hover!). It will show you the phone number to which the parent needs to text REJOIN in order to sign up to receive messages from you again.
Step 3: Share this phone number with your parent and ask them to text REJOIN. Once the parent texts 'rejoin' to this number, the status icon will change from "Unsubscribed" back to "SMS."