Custom DNS blocking not working

[bhjitsense]

I have created a custom DNS block list. I use several other feeds, for which I implement the Top1M to whitelist some of the items in these feeds. I'm using 2000 items in this Top1M. But when I use this, it removes a domain I still want blocked - *.logs.roku.com. So I added this to the custom DNS list, But i doesn't seem to block it at all. I've tried variations of the domain in the list (.logs.roku.com, *.logs.roku.com and logs.roku.com). I want to block all subdomains here. What am I doing wrong? This custom list is not using the Top1M.