Somehow, you were logged out of your account, and this website claimed you have a suspicious activity, but your activity is legitimate. You were just logging into your account. Typically, reputable rewards providers use technologies to help combat fraud. If you were a person who experienced a lockout; most likely account is illegally locked, this is considered a malicious threat to users. Typically, reputable rewardable websites rely on ad networks, offerwalls, and other rewarding mechanisms to run a service for users who wanted to rely on passive income.