Aside from uploading your certifications, you also need to upload your 13615, which is also known as your signed Volunteer Agreement.

Here's where to go to find it on the IRS site: http://linklearncertification.com/

https://s3-us-west-2.amazonaws.com/secure.notion-static.com/1c721340-fa58-4ed7-9ef3-10e9d1e25d87/PXL_20210331_220142754.MP_2.pdf