The mod has been worked on 16:9, so no resolution other than that will be supported. It should work for the other resolutions but you may find glitches and stuff like blackbars, things appearing where they shouldn't and so on. So you can use it with other resolutions, but don't expect it to work flawlessly. It may or it may not.
Also another thing: mod is English only.
Again English is the most common language, so it was an obvious choice. No other language will be supported. If you play in another language, you'll probably have parts of the mod that will remain in English and they will not get translated. You'll basically end up with some texts in your own language and some in English. I'm not sure if the font will work okay with non-latin languages or if it will show squares and stuff. Hopefully not but again, not sure.