Which kickstands fit this bike? The old kickstand had 6mm bolts spaced 18mm apart, so I bought a "KSA18" kickstand, but it didn't fit. The KSA18 stand extended further than 9mm and had a small "hook" above the screws (the slot in the frame is flat). The old kickstand was an Ursus kickstand, but Ursus support thought it was a custom mount. Is the KSA18 standard available? I didn't find it on Google.
Edit: It's an Ortler Bozen Performance (2019) bike produced by Derby Cycle Germany.
Kickstand mount photo from https://www.probikeshop.com/en/gb/ortler-bozen-performance-electric-trekking-bike-black-2019/162662.html