Try raise a
support ticket and explain the confusion.
This is what you have bought btw in case you want to learn more about it.
http://www.drivethrurpg.com/product/...ition-Feats-5e
Now for the community pack.
Watch this.
If you have it installed and still can't see the Feats you likely don't have the PHB source seletected on your character. The Community Pack is all categorized by source book and each character needs to enable the sources it's allowed to use (Ctrl-K).
Once you have the sources selected you should really see the tool flex its potential.