Starting on Jan. 28, Verizon cell customers will no longer receive Remind text messages.
Here is a link to the support article from Remind's site (link)
What can you do proactively?
We encourage parents to download the Remind app for your smartphone. You can sign into the Remind app with a Google account or create an account with Remind yourselves. Then got to Add a Class, which is @isham.
The Remind app works A LOT BETTER than just a text message, and you still get push notifications to your phone exactly like a text message, only with more information. I've been using the Remind smartphone app for years and it's great. Important, if you or a parent have already been using the Remind app, no action is needed and messages will continue to be sent home like normal.