there was a useful getting started guide linked on this forum before - here it is - http://analog.pen.io/
the search results are a bit annoying to wade through but i’d urge you to at least have a look at the thread titles and deduce what might be relevant - there’s tonnes of good advice in here
from the little info in your post i’m not sure it sounds like you are using the right cabling - you need a y - cable to separate the A4 cv streams
see threads about those too