No, I installed one from BMW M50, which should be a hall sensor by diagram fed by 12V (i did the same).
What i have found now searching for analogous problems is that VEMS seems to have a feature to start even without the cam sync. If this is true, then probably the problem is that I just have no cam sync signal. I have added the solder blob to the bottom side and checked that SJ7 is not connected.
When I start trigger log, I actually see no secondary trigger events there, only LESS_STRIG or something like that.