Your WordPress plugin was last updated seven years ago. If you were to update it, you could attract more users.
wordpress DOT ORG plugins/bpmnio/
There is a warning on the top of the page:
This plugin hasn’t been tested with the latest 3 major releases of WordPress . It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.
Also, please consider writing a WordPress plugin that integrates BPMN io with BuddyBoss and BuddyPress. This will expose your software to hundreds of thousands of potential users.
https://www.buddyboss.com/integrations/
One more WordPress integration that could attract a lot of users would be with Project Manager and ERP by WeDevs.
https://wordpress.org/plugins/wedevs-project-manager/
Thanks!