Another method is BEFORE your billing date, switch to Can/USA plan. Note the change only apply on next billing date. Therefore, you need to do it before next billing date and travel after next billing cycle. So plan ahead. $50.00/ MONTH40 GB Canada-...
I got similar message. If you have any active Sim, turn it off. Your phone may allow only one active esim.after I turned off other esim, the activation continue. It gave me instruction to reboot the phone to complete activation. And it works.