If you purchased a perpetual license for version 18.1 in 2018, you may use it indefinitely without a subscription. You retain the right to download 18.1 installers from your DevExpress account. Subscription renewal is only required for upgrades to newer versions.

Instead, I can offer a on the following related topics that would be valuable for a developer or technical writer:

Before diving into the download process, it’s important to understand why this specific version remains in demand years after its release.