Re installing the Paid Foundry modules - foundryvtt-dcc/dcc-content GitHub Wiki

If you need to re-install the module, just follow these directions.

Navigate to your Setup page and click Add-on Modules. Find Dungeon Crawl Classics Core Book Compendium (or the module you want to re-install) and click Uninstall, then click Yes to uninstall.

At the bottom of the page, click Install Module. Click Premium Modules on the left. Then click Install for Dungeon Crawl Classics Core Book Compendium. (Or the correct module you want to re-install).