Many Ryanair customers have faced this exact issue, even with direct app bookings. The system wrongly flags it as a third-party agent booking due to triggers from the email/payment.

Use the free Standard Verification option via the email link (enter your 6-digit booking reference, submit signed form + ID photo); it often unblocks in hours, max 7 days.

There are other options - even the paid for ‘express’ option is only €0.59. You’ll find more info here:
https://www.ryanair.com/me/en/lp/exp...rification-hub

Don’t click any link in the email, just in case it’s phishing. Use the link above and you’ll be good to go in no time