You might need a training specific thru-axle (see picture attached). I had to get one for my disc bike. Its longer than the original axle so the trainer mechanism can lock properly. They come in sets of three for different threads i.e fine, medium and coarse.
I only needed the medium one so if your bike has a different thread your welcome to one of the others.
Thru axle bike on Wahoo Kickr Gen 3
in Technical Q&A
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