I'm too inexperienced to offer any real help here, but:
If you are getting clouds, but no effect, then presumably your actives have been destroyed during your process.
If your vaping equipment is producing enough heat to vape clouds, then I'd say it's safe to assume that it's getting hot enough to decarb your product.
So my guess (in this case)would be that something like too much heat when boiling of the ethyl might be the issue.
This is very much a guess from an inexperienced enthusiast though, so BIG pinch of salt here!
If you're not getting clouds, then all bets are off, as it could be your liquid, OR your vape tool.
I'm sure others will heve better advice