@nebulon I'm also interested in this. But for the home instance.
https://www.onlyoffice.com/blog/2020/03/integration-edition-at-home-10-users-for-99/
I spoke with their customer service. It seems like you need to actually install the enterprise version first. You can't upgrade the community version.
From the rep:
"
You would need to reinstall the instance.
Unfortunately it is not possible to upgrade the community version to the home server just by enclosing a license key
"
They directed me to this link.
https://www.onlyoffice.com/download-commercial.aspx
I guess it would be nice to have both version of onlyoffice available to install on cloudron (community and enterprise). It would also be a nice way to support upstream vendors.