It is important to note that was discontinued over a decade ago.
Because license codes are considered the user's responsibility, the PCDJ General Support page notes they cannot always issue replacements for lost codes. However, you can take these steps:
: Some users have found that rolling back the system clock to a date several years in the past can temporarily bypass internal errors in these legacy versions. 🚀 Upgrading to Red Mobile 3 and DEX 3 OG Downloads - PCDJ