Error Using Twitch, "Unsupported Browser", Can't Use Site

Describe the bug In the last couple days I began having issues using Twitch through Supermium, mostly through notifcation-type features such as sub gift or channel point reward claim notifications. I attempted to troubleshoot it today, but once I cleared cookies, thus logging me out, Twitch no longer allows me to log in, stating that this browser is unsupported and to contact the owners over this. While an issue with the one website on its own is a bummer, the fact that Twitch suddenly sees some issue with the browser itself that's leading to this could also end up effecting other sites, so I figured I should bring this up.

To Reproduce Steps to reproduce the behavior:

Go to 'Twitch'
Clear Cache
Refresh
Fail to Log in, receive Error

Expected behavior On Twitch various notification-type settings will not function and instead will fail to load or give errors. Signing out will result in being unable to sign back in, resulting in Twitch claiming the browser as unsupported.

Screenshots None.

Desktop (please complete the following information):

OS: Windows 10 64
Bitness of browser (?)

Additional context Unfortunately this issue is going to result in me having to return to Chrome for now, but I'm going to be checking back for updates constantly to see when this is solved. I've enjoyed my time with Supermium so I wouldn't want to have to abandon it altogether.

win32ss / supermium

Error Using Twitch, "Unsupported Browser", Can't Use Site #1034