uninstall mojotionjoy crap after you finished and probably run an AVĪ PS3 pad with ePSX is actually terrible from what i test and read. You can now setup the PAD by using create new profile > auto select XBOX config > then test and make changes to suit. Basically MoJoy appears to inject a device ID for the PS3 controller most notably a USB pad or XBOX 360 driver and hardware/ device ID Now you can run better DS3 which will recognise the PS3 pad
you can safely install all if more than 1 device is listed, you can always uninstall anything later if required. choose this and click install for the device you plugged it.
In motionjoy (you may have to load it twice to get the nasty green advert window) theres an option like driver manager at the top Install motionjoy and run the DS3 tool// not better DS3, the DS3 that comes with MoJoy Windows will recognise and install as Playstation(R)3 This is based on a PS3 sixaxis controller (i don't think they rumble), you might be out of luck with a 'Knock-off' model like your snakebite
