I have kinda the same problem as described here, but I’m on the lastest NC version (26) so an update as the solution isn’t available.
I have a totally new NC installation on a rented server (your-storageshare . de by hetzner . de) and NC Office is installed.
I want to use Collabora CODE server - as far as I understand a free option for home use and small teams.
Therefore I should install (and find) an app called
richdocumentcode (name of the link in app store) or
Collabora Online - Built-in CODE Server (name of the app) https://apps.nextcloud.com/apps/richdocumentscode
but I don’t find any app similar to that with the built-in search or if I look through all categories manually.
you’re right: the latest version of NC is 27. But on my rented server it says “v26 + up-to-date” - probably I can’t change that because it is updated centralised (and hopefully soon will be because v27 came out in June, right?)
It seems that I have restricted or delayed access to updates as well, i.e. the app Nextcloud Office/richdocuments is already installed but not in v8.0.4 but v8.0.3 (minor problem hopefully)
The problem with richdocumentscode/Collabora CODE is that it isn’t even listed in my app store.
Till now I thougt that the “normal” NC app store was included but it seems that there is kinda pre-selection or … delay/control…
I’ll contact my hoster and if that doesn’t help, I’ll come back here again
I tried a bit with the console and occ but I’m not so familiar with that, so that tip is - at the moment - not part of my solution xD