Premiere Elements 2020 activation issue after reinstalling on a new Windows PC

I own a legitimately purchased license for Adobe Premiere Elements 2020 for Windows and still have the original serial number.

I recently installed Premiere Elements 2020 on a new PC. The application installs and runs normally, but only in the 30-day trial mode. When I try to activate it using my original serial number, I receive an error stating that the serial number is blocked or too old.

I also tried the Adobe Provisioning Toolkit (APTEE) using the documented LEID:

V7{}PremiereElements-2020-Win-GM

The operation consistently returns Return Code 14.

The amt3.log contains, among others, these messages:

RetrieveInfoForLEID: PPDL entry not found in SLCache

App has requested features but there are no licensed features, hence no license.

Licensing has been refused. Application must exit.

I also have a complete file copy of the old system drive from the previous PC. It contains the original Adobe licensing data, including:

Program Files (x86)\Common Files\Adobe\SLCache\SLConfigs\V7{}PremiereElements-2020-Win-GM\SLConfig.xml

and the corresponding Premiere Elements 2020 files under:

ProgramData\Adobe\PremiereElements\18.0

The old PC originally ran Windows 10 and was later upgraded to Windows 11. The current PC runs Windows 11 25H2.

I would like to continue using the license I already purchased, rather than purchase the product again.

Could you please advise how I can reactivate my existing Premiere Elements 2020 license on the new PC, or provide an officially supported installer/activation procedure that works with my existing serial number?