OneSMS
iPhone App - OneSMS - FAQ
● No Pairing ID
In the case that no Pairing ID appears, the following might help.
1. Are Push Notifications allowed
So that OneSMS works correctly, the App must be able to receiver push notifications. If you have denied this on your first installation, you have to permit it.
Change the status under: System/Notifications/OneSMS Alerts to ON.
If push messages are allowed and it still not works, the second approach could help:
2. Re-Registration
The OneSMS App must be closed previously. Open OneSMS and as soon as you see the main screen close it, and then reopen it. (Now wait, the Pairing ID should appear.)
If you do this process between 10 seconds, the app force a re-registration.