Troubleshooting

With 2025 TurboTax standard 1 have activated TurboTax on 1 computer, but when I try to activate on a second computer it says code is in use for 1 of 3 computers.  the only choice then is to click "Activate".  At which point if asks to enter the 10 digit code. When its entered and I click "Activate" it gives me a error 608.

I've tried with both my TurboTax accounts but I get the same results.  Why?  How do I complete the Activation?