Receive up to $504 promo credit ($180 w/Welcome Unlimited, $360 w/ 5G Start, or $504 w/5G Do More, 5G Play More, 5G Get More or One Unlimited for iPhone plan (Welcome Unlimited and One Unlimited for iPhone plans can't be mixed w/other Unlimited plans; all lines on the account req'd on respective plans)) when you add a new smartphone line with your own 4G/5G smartphone on an eligible postpaid plan between 2/10/23 and 4/5/23. Promo credit applied over 36 months; promo credits end if eligibility requirements are no longer met.
$699.99 (128 GB only) device payment purchase or full retail purchase w/ new smartphone line on One Unlimited for iPhone (all lines on account req'd on plan), 5G Start, 5G Do More, 5G Play More or 5G Get More plan req'd. Less $699.99 promo credit applied over 36 mos.; promo credit ends if eligibility req’s are no longer met; 0% APR.
Make sure that for your authentication on your sub accounts you are using the sub account's username and password, not the primary account's info. Also make sure that they are properly formatted. Without looking at your settings there's not much else I can tell you, but there are online repair tools available from Verizon if that would help.
You can also contact tech support and have them review your settings. I would suggest via chat, since there seems to be a higher competence level for the chat reps (in my experience).
You can look on their Contact Us page for options.
I have the exact same problem. Anyone sove it yet?