Time to sign up for Managed Payments and be verified to sell is before you list anything

And even if you had done what you were needed to do, your funds would still be on hold for 30 days due to you being a new seller

Same rules for everyone

All of which you agreed to when listing

And you need to post the item within your handling time, not make the seller wait

It is not the buyer's  fault you did not follow the process you were required to