Receive up to $500 promo credit ($180 w/Welcome Unlimited, $360 w/ 5G Start, or $500 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 12/23/22 and 2/16/23. Promo credit applied over 36 months; promo credits end if eligibility requirements are no longer met. Excludes Verizon Prepaid plans.
try a 2nd browser, and if that doesn't work, then use the contact us link that verizon provides at the bottom of the page, and do a chat support. they seem pretty well adept at fixing issues like that.