Phone Call Blocker - Blacklist

Hi I have noticed that the app is no longer showing in the notification list and no icon showing at the top. The app previously did this. I am now not certain it's even running. Would you be able to advise please I have noticed that the app lock function is not working now and there is nothing in the settings, has it been removed? I have updated it recently. Thanks.

rating after 1 week, so far so good, set to allow contacts only, sends people straight to voice-mail. I tried about 3 or 4 other apps before this one, I'm sticking with this one as long as I can. thank you app makers! all your basic features, doesn't have super fancy ones such as block specific area codes, but it's totally free, very limited ads, can turn push notifications off, so it runs quietly. UPDATE 1 MONTH LATER, I have notifications off, contacts only on, this is the best app I've used

Ads freeze and won't play, and I can't use my phone's nav buttons (app switch, home, back at the bottom of the screen) because it all redirects to the page of whatever ad is showing. ....which is extremely dangerous if an ad happens to be malicious. But closing and reopening the app every single time I do anything in it is the closest to functioning I can get it. I'd consider buying the app if I could actually try it