Iwatch card not verified

Please unpair the Apple Watch from the iPhone and do a forced restart and then pair the two devices back together.

Restart Apple Watch - Apple Support

After they are paired again, please go to the Watch app on your iPhone and try adding cards again.

Which Apple Watch do you have, Series 3, 4, 5, SE, SE2, Ultra? What Apple Watch OS is it running?

And what Watch OS is the watch running?

It sounds like you got the issue resolved. You’re welcome!