Hi, have you found a solution? it is doing the same with me!
It kinda finally worked with me, I opened it from chrome browser but on an Android tablet. But I had to use the option "desktop site" to open it.
So, it is still not opening on my PC but at least now I can use it.
Ditto, unsupported browsers and I tried with two computers, including Windows 10 and the latest Edge and Chrome browser updates, nothing, always the message: "your browser is not supported"...
This message does not mean anything and does not correspond to the problem.
I also emptied the cash and cokies, I have no VPN or firewall.
Several problems of this kind on this forum and 0 solution...