Grail CF SL 7 AXS with SRAM UHD derailleur hanger on Tacx Flow Smart Trainer

I want to ride my Grail on the Tacx Flow Smart Trainer this winter. The standard thru axle doesn't have any mounting points for the trainer. That's why I bought the Garmin TacX T1707 replacement axle for E Thru rear wheels. But when I installed it, I saw that it's not compatible with the SRAM UHD derailleur hanger. It rubs against the inside of the derailleur hanger and doesn't have a mounting point for the trainer.

Does anyone have a solution for me? Everyone with an SRAM UDH derailleur hanger has this problem…

Link to the derailleur hanger:

https://www.canyon.com/en-us/gear/components/spare-wear-parts/sram-udh-derailleur-hanger/10006305.html

Link to the replacement thru axle:

https://www.garmin.com/de-DE/p/690906/pn/T1707/