cant decode ppm from r12dsm receiver

[AoiShiroYami]

hello. im trying to set up the vjoy to run through SPP on my laptop using the RadioLink R12DSM receiver, the program runs and cant deode the signal i guess? i tryed opening the scope and it works flawlessly, but for some reason, none of the signal decoders can actually decode it, ive tryed one by one and none work, also tried auto and scan, no luck either, is there any other decoders i need to download or simply cant use it on this transmiter?