After struggling for a month, I finally solve the problem.
I found the following threads, and it really helped me out.
https://ttlc.intuit.com/community/taxes/discussion/license-code-multiple-request-by-tt-2019-desktop-...
I found out that I have two external hard drive connected to my desktop when I first installed TurboTax. And after I plug those two hard drive back to my desktop, the activation window disappear, and I can normally use the software.
OMG, this is so stupid.
I hope my experience help. Good luck.
