Trying to set up my Apple Watch with the mobile service set up but when it takes me to the three log in page, I enter my details but this error keeps appearing.
I'm having the same problem with Watch 6 with S23 Ultra. Have tried all the suggestions listed above including resetting password, restarting both phone and watch, disabling Wifi but nothing works. Keep on getting the same infuriating 'one of the fields missing' error. I'm seriously considering now to cancel my Three plan and move over to someone else.
Same problem with Apple Watch 9 and Apple Phone 13 Pro. Tried to get help through Three's Live Chat - couldn't help just me to restart me phone. Tried Three Local Store - couldn't help - told me I need to buy a new phone! Tried all the hints on this help page. What do I do now - cancel my Three contract and move providers seems the only solution.
Hi I had the same issue with a samsung galaxy watch 7 ultra what i did was make 3 remove the device pairing from the account and then set up the watch and set up the device pairing through the watch set up its an issue at Three but to be fair they are so incompetent they have no idea how to fix it
If anyone is still having issues with this problem, I found that resetting password -> following email link brought me to a “We’ve noticed suspicious activity@ message and click to unblock your account.. once this was done I attempted to resubmit email and password again and it worked
