Because of Atlassian will end of server sales from 2/2/2021 and end of server support at 2/2/2024, we want to know can we continue use this plugin after our the license expired? Or if the license expired, the plugin can not be used until we must renew the new license?
No, it will continue to work. We’ll likely remove the licensing check from the product in server entirely, so if you want to just continue to use draw.io beyond 2024 nothing will specifically block you in draw.io.