Same tempo for all my rackspaces ? Why?

Hello there, I hope everybody is doing fine !
I want to change the tempo of each of my rackspaces but they always keep the last tempo I entered.
How to do that ?

Thanks !

Did you check “Set time information”?
Bildschirmfoto 2020-07-30 um 12.18.46


Thank you pianopaul, that was the solution !