continue to list authentic keys for sale. Additionally, used physical copies with valid keys can often be found on secondary markets like The Difference Between Product Keys and Registration Codes It is common to confuse the Product Key Registration Code
For digital purchases made before Serif discontinued the line, check your email history for a "Serif Order Confirmation" or "Product Key" email. Serif Photoplus X8 Product Key
The most common source for "free" keys is software cracking sites. continue to list authentic keys for sale