Hello MOBO8083,
Welcome to Apple Support Communities!
We want to make sure your iPad is getting these calls on time and as expected again.
Let's make sure your settings are correct so the iPad is getting the calls on time:
"Set up iPhone Cellular Calls
You can use iPhone Cellular Calls with any Mac, iPhone, iPad, or iPod touch that meets the Continuity system requirements. It works when your devices are near each other and set up as follows:
- Each device is signed in to iCloud with the same Apple ID.
- Each device is signed in to FaceTime with the same Apple ID.
- Each device has Wi-Fi turned on.
- Each device is connected to the same network using Wi-Fi or Ethernet.
- On your iPhone, go to Settings > Phone > Calls on Other Devices, then turn on Allow Calls on Other Devices.
- On your iPad or iPod touch, go to Settings > FaceTime, then turn on Calls from iPhone.
- On your Mac, open the FaceTime app, then choose FaceTime > Preferences. Click Settings, then select Calls From iPhone."
This Apple Support page has the full details: Make and receive calls on your Mac, iPad, or iPod touch - Apple Support
If the issue remains, try restarting all devices involved and then testing again.
We hope this helps to isolate and resolve the issue.
Cheers!
