Adobe Creative Suite CS6 Serialnumber problem?

[Mister26610059l50h]

Hello forum, I have the following problem:
I own Creative Suite CS6 from Adobe on Windows 10, have now switched to Windows 8.1 because the programs work better there. (In my opinion.) When I try to enter my serial number, it says that the serial number I entered has been locked. I have switched Windows versions several times and it has always worked. Why now all of a sudden it doesn't? I would appreciate an answer.

[Test Screen Name]

What is the EXACT message please? 

[John T Smith]

When you can't properly deactivate a serial number
(this is the ONLY support Adobe still offers for old programs)
BE SURE TO ONLY ASK FOR ACTIVATION SUPPORT TO ADJUST YOUR ACTIVATION COUNT
You may need to PERSIST or TRY AGAIN to find a support agent with more experience

This space is provided by Adobe, but this is not Adobe support
Sorry, nobody here can help with an account or payment problem
This is a public forum, you need the link to Adobe support, not other users
Help Center https://helpx.adobe.com/support.html is a good place to start
Be sure to remain signed in with your Adobe ID before accessing the link below
Do be aware that Adobe's staffing is impacted by the virus, so wait times are long
-you MUST make sure that your browser does NOT block ads, scripts, or pop-ups
-you MUST also allow 'cookies' in your web browser for the link to work
This link will go directly to the chat option
Type "Agent" in the chat box to bypass the chatbot and be connected to a person
-Meaning type in the word Agent without the quote " " marks
https://helpx.adobe.com/contact.html?rghtup=autoOpen
- or by telephone https://helpx.adobe.com/contact/phone.html
.
Adobe does NOT do support by email, so beware of answering anyone who sends you a private message
-click for more information about scammers https://tinyurl.com/10791730

[Mister26610059l50h]

ok

[Peru Bob]

This may be the issue:

https://helpx.adobe.com/x-productkb/global/invalid-revoked-serial-numbers.html

and

https://www.adobe.com/genuine/landing-dnr.html?promoid=791Y6S4Z