https://gitea.wildfiregames.com/0ad/0ad/wiki/Localization

The link on this page for the GNU/Linux installation instructions: https://play0ad.com/download/linux/ Leads to here: https://gitea.wildfiregames.com/0ad/0ad/wiki/GettingTheUnixRelease Which returns a 403 Forbidden response at this time.  

The following link is a video that I tried to record using a video capture card. https://i.imgur.com/IbzBkIT.mp4 I hope this makes the description of issue 2 clearer.

There: https://gitea.wildfiregames.com/0ad/0ad/pulls/7104

Where?

For mods, definitely for the main game not really because of the dubious license.

2. Closest was this but the mod hasn't been updated in a while.