Can't shift on Wahoo Kicker Core

Today I bought a Wahoo Kicker Core, installed a 105 cassette put the bike on and I can't shift into my 34 tooth gear. My shifting outside on the road is excellent no problems at all but on the trainer it won't go into my easiest gear.
Any advice would be greatly appreciated.
Any advice would be greatly appreciated.

0
Posts
Is it a 10 speed cassette? I think you need a spacer to use a 10 speed cassette on an 11 speed hub for example.
Do you use a 34t normally?
The bike (Giant Contend) came with a 34 which I use occasionally on bigger climbs. Would it matter if I just left the gears as they are and just did without the last gear on the turbo without causing any damage etc?
Most are okay when it comes to changing them, I switch both my bikes on and off my Neo and have no issues (one is disc too)