Cryptotab: Scam or not?

Is Cryptotab a Scam? I have a lot of questions since my CryptoTab account was blocked, so I asked them for a reason. I haven't received any more replies from them, detailing why was my account suspended, so with this occasion I did remove the invite links and consider them at least suspicious. Is it CryptoTab scam or not? I'll let you judge this, but I did search myself for this question and got a lot of interesting reviews on other websites such as TrustPilot where they have a rating of 1.7 out of 5, with most users complaining that they don't payout anymore.

Crypto mining apps for Android – worth it or not?

First one I started testing is CryptoTab. It's a browser based on Chromium but with built-in mining. It comes with a built-in mining algorithm that allows anyone to mine Bitcoin without expensive hardware or technical knowledge. They have clients available for Windows, Android and iOS. I've tried Cryptotab for Android and it works just like Chromium - the difference is that while you browse it uses some background CPU resources to mine - barely noticeable while browsing. So, down to business, how much can you earn with Cryptotab?