$540 via promo credit when you add a new smartphone line with your own 4G/5G smartphone on postpaid Unlimited Plus plan between 5/18/23 - 5/31/23 & port-in req'd. Promo credit applied over 36 months; promo credits end if eligibility requirements are no longer met.
Lumia 822 "unable to find a bookable option."
Sadly that error means the phone is dead; that error is prone to the 822's. You'll need to replace the phone.