TDS has a manual component where someone at the IRS has to physically turn on your access. It’s not in the user interface, so it looks like you should be all set, but when you login you just get an error message and get booted out. I had this problem back in May; since October I had my eFile application approved and had the appropriate access to download transcripts, but there was some sort of hold I had to clear. The rep at the IRS indicated the problem was related to the fact I did not eFile returns (I am an attorney and my office files returns under another EIN). This was a problem back in spring 2020 because the call centers were all shutdown, but they have been open since June. You may need to wait on hold a long time. They can clear the issue in about 15 minutes assuming your eFile application is all set.