If you were a Sprint customer, you should be aware that T-Mobile and Sprint have merged together. If you have received a new SIM card from T-Mobile, you will also have to reactivate RoboKiller.
Uninstall the RoboKiller app.
Restart your device.
Reinstall the RoboKiller app.
Proceed through the app's activation steps. If you're brought to a paywall, please select Restore Purchase.
If you run into any issues, please be sure to reach out to our support team at firstname.lastname@example.org.