Help needed on trackmania turbo - PC.

I bought a Ubisoft Trackmania turbo n installed it using the key provided on a laptop and linked to my uplay account. Now my sibling in the house wants to play it on his laptop. But it is not working on the other laptop. Neither by the same uplay account nor on a new one. The game starts but crashes just before the start of race. Kindly help, cuz the box says '16 home PCs'.

Probably the laptop can't handle the game

@MonsieurX: But do i have to use my uplay account or a new one to play the game on the other laptop?