Edit iOS files with Collabora

Hello. I got nextcloud running and enabled Collabora. LibreOffice and MS Office file formats are opening in web/online-editor (local server), but iOS files pages, key, and numbers are just downloaded.
Is there an option/configuration to edit these files onlne-editor?

What files are you speaking about IN DETAIL?
What mime types are returned if you check the files using the file command?
How should Collabora know any iOS file format, it hasn’t been designed for it?