The solution to accept/decline buttons is simple - read the instructions.
What you're missing is the module, which is required for all implementations except the cookie blocker.
The Google Analytics number change should be pretty clear - the numbers won't reflect accurate visits if the eprivacy extension is configured properly......it blocks cookies, which will block accurate accounting of visits.
I actually wrote a Google analytics plugin that does not rely on cookies to solve this very issue.....One for YouTube as well.
BTW, CookieBot doesn't block any cookies, it's a glorified notification popup.