Premiere Elements 16 - problem with activation

[Aleksander Pianko]

In 2018, I bought Premiere Elements in one of the stationary stores. I have activated the program and it is visible on my adobe account together with the download option and serial number. The serial number is also on the envelope with the CD in the box. I haven't used this program for over 2 years and decided to give it to my brother.
After the installation on his computer, a message popped up to deactivate the program on another computer. Now I have information that the product key is not genuine. What can I do with this ?

[John T Smith]

Transfer (selling or giving your software away) https://helpx.adobe.com/x-productkb/policy-pricing/transfer-product-license.html
-you may NOT sell or transfer an Education serial number

[Peru Bob]

 Now I have information that the product key is not genuine.

By @Aleksander Pianko

See here:

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

and here

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

[John T Smith]

>message popped up to deactivate the program on another computer

>information that the product key is not genuine

This may not be the problem, but I remember another message that SEEMED to indicate that the invalid key message was an error caused by too many activations... so have chat support reset your activation count and try again

When you can't deactivate a serial number
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

Be sure to remain signed in with your Adobe ID before accessing the link
Do be aware that Adobe's staffing is impacted by the virus, so wait times are long
-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