Collabora built-in server install & configure fails

[lapineige]

Describe the bug

I try to use the built-in Collabora CODE server. Install works. But then in Nextcloud Office admin tab, I have this:

You have not configured the allow-list for WOPI requests. Without this setting users may download restricted files via WOPI requests to the Nextcloud server. Click here for more info

Impossible to connect to Collabora Online. This might be due to a web server miss-configuration. more informations

The Nginx rule is the one by default, I didn't change it.

On another server (raspberry pi 4, 32 bits installation), the ARM64 version doesn't work either. The install fails with "unsupported architecture : aarch64". Related to #376 ?

On both servers in the admin overview panel I have: Your web server is not properly configured to resolve "/ocm-provider/" And the same for /ocs-provider/

Context

• Hardware: VPS bought online / Raspberry Pi 4 32 bits
• YunoHost version: Latest
• I have access to my server: Through SSH | through the webadmin | direct access via keyboard / screen | ...
• Are you in a special context or did you perform some particular tweaking on your YunoHost instance?: don't know if relevant
• Using, or trying to install package version/branch: 25 / 26 (raspberry pi)