If you get stuck when trying to pay and download Pennsylvania, close the program, clear your Cache and Cookies and retry. You're going to a Billing server and your connection may be blocked. Other users have used an incognito window, and disabled their anti-virus programs for a successful connection.
If this does not apply, please share your exact issue and we'll try to help. Here's more info about a State Install/Efile Loop.
@OldCarGuy
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