Great project!
I would also like to do a Russian translation, we've talked via telegram.

PC 1:
Windows 8.1
Firefox
AMD FX8320
Radeon HD 7900

PC 2:
Ubuntu 17.04
Firefox
Intel i3-2330M
Radeon HD 6470M

Mobile 1:
iPhone 6
Safari

Mobile 2:
iPhone 7
Safari

Mobile 3:
Ipad 2
Safari