Adobe Premiere Elements 15 - licensed or subscription based?

Hello,

A few years ago (I believe 2017) I purchased Adobe Premiere Elements 15 and the license key worked fine. After that I didn't use it for 1,5 years.

Now it does not work anymore.

Does someone know if a license key for Adobe Premiere Elements 15 expires after one year...? Or if Adobe changed my perpetual license into a subscription without notice?

Thanks,

SJW