Posted on GitHub but I don't think the answer works with the Cloudron containerisation limits to accessing the Modules folder unless you change that? https://github.com/freescout-helpdesk/freescout/issues/847 I've solved anyway with a reinstall, costs more time but need to get on with testing other stuff.

Also a useful thread on the subject of ports and autoconfig/autodiscover: https://forum.cloudron.io/topic/1296/add-dns-dav-registring/4?_=1595212232880

@girish This is good news! However I'd better wait for 5.3 as this is a production Cloudron with high usage and I don't dare to change that code