The service center that handles TDS access has to manually turn on TDS for approved eFile applications. You need to call the center and get them to remove the hold. I had the same problem last fall through the spring, even though I was approved for TDS on my eFile application page for over a year. Fortunately the TDS support center opened back up in late May and was able to remove whatever the hold was. The wait times are pretty bad on this phone line typically, however.