I sold something recently and got an email saying that it had been bought, and to send it by a certain date. I took it to the post office the next day and bought one of those Express satchels and put in all the buyer's information and sent it out, then wrote them a PM telling them what the tracking number was and that it had been sent out. However, eBay themselves also ask you to use their system to print a postage label.

I was wondering, as this is my first time selling, is using their postage label required to get paid? They are holding my funds until 10th July so they can verify that the buyer has received their item and that I'm legit. Unsure if they won't release the funds to me because I used a padded mailer from the post office and not eBay's postage label.