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@Mr_Bread . Does your wife's account on Win10 get banned as well or just yours?
You could try deleting all the cookies in your browser for a start. Websites use cookies to remember things about you. Then try clearing browser cache and history.
You can check VPNs on choice.com.au but you have to pay for the report. It will list all the ones they tested and you can check them separately. Or, reviews in computer magazines. If you have an antivirus package, that provider might have one.
Get one that locates in Australia. It might be useful for other things.
@david64 My wife and I use the same account on this PC. So, there's no way for a website to tell who is actually using our PC.
I followed your advice to some extent and went to browser settings and deleted a lot of cookies from suspect websites, including omegle.com. I also blocked that website from saving and reading cookies on this PC. That seems to have worked.
Thanks very much for your help.
Mr_Bread