29x2,6(2,4) wheelset on e-spark 710 Contessa

[JanSan333]

Tried to switch my 27,5x2,8 wheelset for a 29x2,6 set-up.
The front wheel should work (removing the mudguard) but the rear one just won't fit.
Do I do something wrong??
Also This version of Scott e-spark 710 Contessa doesn't have the flip-chip.