Problem reinstalling Master Collection 6

>my account is showing no activated devise.

That is only for subscriptions, not serial number programs

a valid serial number can be revoked at any time when/if adobe finds the serial number publicly available, or finds the vendor violated adobe’s terms.

That was the main mistake in your case. CS6 was released 14 years ago. Before attempting to reinstall such an old piece of software on a modern equipment it was never built for, it’s better to first check if it’s possible at all. You could still successfully run CS6 on your old machine.

And yes, I do understand how frustrating it is, especially in your case when you only use it a few times a year. I think that in an ideal world, there should be subscription models for cases like yours.

On the other hand, it also means that CS6 isn’t that much of an essential tool for you anyway. There are several alternatives that cost little or nothing you may consider. Also, Adobe offers a month-by-month subscription too, which could be suitable for you if you only use it a few times a year.

In brief: You won’t be able to activate your antique unsupported CS6 software that reached its end of life long time ago. No matter how frustrating it is to you and whether you believe it’s unjustified or not.

For more info, there are several threads on the subject. I may look them up later and post the links.