We want to connect our Comala Document Management plugin to our core Confluence license.
I've just confirmed with the Atlassian billing team, and with the Comala team that this product is paid for us until February 2021.
Unfortunately, we're unable to renew this product from our Confluence plugin admin since it is not associated to our main Confluence license.

I've already contacted the billing team and they asked us to post this issue here.