GeForce Now by Nvidia is an alternative platform War Robots can be played on. Please note that technically it’s not quite a platform like Steam, iOS or Android—you launch GeForce Now, yes, but your progress and achievements are based on Steam. It’s more like cloud gaming.
Since we do not handle technical peculiarities of GeForce Now, here is the link to GeForce Now Support that may help you:
https://www.nvidia.com/en-us/geforce-now/support/