Contact the current publisher (Easy Software) and ask if they offer a discount for users who want to purchase a modern license but prefer the standalone nature of v5.4. Sometimes they provide legacy keys for accessibility reasons.
: Enter your license key or select the "Evaluation/Free Trial" mode during setup. colos create professional 5.4 download free
If you want to use version 5.4 legitimately without paying a high price, consider these options: Contact the current publisher (Easy Software) and ask