You can fix it: if the problem is something like a name or CPF mismatch, a blurry photo or an unreadable document, you'll see a prompt in the app to complete your verification. Follow it to resubmit.
Contact support: if there's no prompt to resubmit, or you see a message telling you to contact support, our team will need to review your case. This also applies if a detail like your phone number or CPF was refused, or the CPF is already used on another account.
You can't use PIX until your verification is approved.