

Looks like most of their services are also foss. Says their cloud service is powered by nextcloud, and pad is powered by Etherpad, upload by Lufi, etc. So, OP could probably just self-host most of these really easily. Hardest one would probably be email. That’s a whole 'nother beast for most. Especially since most residential IPs are blacklisted. You almoat always need to cloud-host that.
My cloud-hosting knowledge is a bit dated, bit I bet there are webhosting places that do the email bit for you, you juat pay the monthly fee to use their auto-gen instance of mailcow or whatever.
Did you create your own docker container, or did you use the official one?
I have the official one up and running, voice and video chat work out of the box.