Comodo Ad blocker stops ok google from working

Hi, I have installed comodo ad blocker onto my Moto G3 android lollipop 5.03 phone. Everything seemed fine at first blocking all ads on various apps that i use. There is an issue however…when i want to search something using ok google I have to disable the ad blocker before it will work. If i dont disable ok google just says cant connect to google at the moment. Any ideas what could be causing this??