LR6 reactivation problem

Hello.
I have a problem with legally purchased Lightroom 6.
I've had it for years, on two computers. Unfortunately, both computers were reinstalled due to disk failure. I couldn't deactivate the license on these computers, so now I have lost access to LR. The app won't reactivate. Adobe support won't help.
I do not want to buy a subscription for photographers, because I use the application very rarely, usually after the holidays.

Is there any way to fix the Ligthroom?