I have exact same problem. Running Windows 10, 64 bit, have used TT for years. Despite using correct id, pw, vc cannot activate download to use, keep getting endless login loop screen, wasted an hour already. All security and vpn turned off, still cannot get to work. After last years fiasco, I should have known better. At least Amazon was kind enough to refund the purchase and is escalating issue since I made it clear numerous online complaints about this with TT apparently doing nothing. Any suggestions for better tax sw since TT obviously is now IMO no longer a viable option due to numerous problems last year and now this year cannot even activate. Thanks.
