Game time question

[Roquref]

I went to "my fixture" and the time to my left. I taped on it
And nothing... I can't change the game time

I am using Iphone app...

Thanks kindly.

you can change home games via my fixture but it will cost you 2 tokens

think there is a time limit on how close you can change it, ie not 30 mins or hour before but not 100% sure..