Circle App's Ad Blocking feature doesn't play well with certain web apps, such as Hubspot

The Circle app works great on my Nighthawk R6900. However, there's one little issue. Certain apps and web authentication are being blocked, as well. Namely, my Hubspot account, which I use for sales/marketing. It isn't exactly made clear as to what the Ad Blocker blocks, and if certain things can be whitelisted. i.e. what constitutes "ad traffic?"