The software reverts to "Free Mode." You can still view documents with Kutools features already applied, but you cannot edit using Kutools tools. Your documents remain safe.
: Professionals, writers, and administrative staff who manage large, complex documents. Key Features & Capabilities About us - ExtendOffice Kutools For Word License Key
For permanent access, you can purchase a lifetime license from the ExtendOffice order page : The software reverts to "Free Mode