I'm not even gonna touch the kряк part, but I do know that Wisbar is a decent monitoring tool. If you're having trouble with the serial number, you might wanna try checking the product page or reaching out to their support, they might be able to help.
Honestly, I don't think a crack or serial key for wisbar adv2 is a good idea. It's probably gonna land you in hot water with the devs and potentially get your account banned. Has anyone tried reaching out to wisbar support for a legit activation?