Hey @pkon92, I gave an answer to your other post....didn't see this until afterwards. Just takes a little time according to the process. It doesn't work like Paypal.
"The first time you ship, you’ll need to set up your deposit account by adding a debit card or bank info to your OfferUp account. If your deposit account is already set up, the transfer process will begin automatically. You must provide your deposit information within 90 days of a sale. How to set up your deposit account"
You may want to reach out here.