We are experiencing some issues with the TROM.tf server. ytb.trom.tf (invidious) and bird.trom.tf (nitter) do not work currently. We've seen similar issues with these instances in the past and we have not found a solution. We will look more into this.
files.trom.tf (nextcloud) cannot connect with our OnlyOffice server. OnlyOffice is not well maintained by @YunoHost it seems - not updated in more than a year. So maybe that's the issue. We have enabled Collabora as an alternative to this.