I would bet that you have some malware and that it has found a way to take affect when viewing this website. You need to do all the regular steps to remove it, then reboot.
I suggest you run Firefox or Chrome, and add uBlock Origin as an extension. Check that you have your firewall and Windows Defender turned on. It does not hurt to run separate anti-virus and malware blockers, but only one of each. I used Avast! and Malwarebytes when I was on Win 10.
An Avast antivirus subsidiary sells 'Every search. Every click. Every buy. On every site.' Its clients have included Home Depot, Google, Microsoft, Pepsi, and McKinsey...
