The Tax Office is not equipped to handle these types of issues.
If you are experiencing difficulties with ePLATE or webDEALER, it is important to reach out directly to the Texas Department of Motor Vehicles (TxDMV).
You can contact them at (888)368-4689 or (512)465-3000 to file a support ticket. Please keep in mind that due to the high volume of calls they receive; you may encounter extended wait times when trying to reach an agent. You can also email them at MVDLicensing@TxDMV.gov.