Oncertainffic.club is the domain name of a bogus website that does not offer its visitors any valuable content. The Oncertainffic.club page is involved in the so-called ‘Please Click Allow to Continue’ low-level online con.
If you try to browse the content that the Oncertainffic.club site may claim to host, you will be invited to confirm that you are not a robot. The Oncertainffic.club page displays a fake security test requesting the user to click on the ‘Allow’ button. However, clicking ‘Allow’ does not serve as a security check – instead, this action would permit the Oncertainffic.club page to send Web browser notifications. This will be used to flood the visitors with unwanted advertisements, which may promote unsafe products every time they use their PCs.
If you want to stop the Oncertainffic.club page from sending you push-notifications via your Web browser, you should revoke all permissions granted to this website. This can be done via the configurations of the Web browser easily.