I've never cared for multi-step verification online and never asked for it to be a requirement for file attachments here. However, if the devs are not going to give people a choice anymore, then the very least they can do is optimise the site and the 2SV process for other browsers. I've never had any issues with the forums using Opera GX in the three years I've been here, but the abysmal optimisation (or lack thereof) for the verification process has now rendered the login process impossible without having to use a different browser. Any attempt to log in using Opera GX is met with the 2SV page failing to appear, before being unceremoniously booted back to the main page, not logged in. Any attempts to resolve this issue on my end have gone nowhere and judging by some of the other threads on the subject, I'm not the only one having this problem. There's not much else I have to say, so I'll just restate my point to get it through: OPTIMISE 2SV FOR OTHER BROWSERS ALREADY.
This could be caused by cookies. Please check this thread: https://www.beamng.com/threads/2fa-and-login-issues.104649/
Could you please try to do so using incognito mode in your browser? If you can do this, using the incognito mode, then you still have broken cookies.
Cleared the site data again and I can log back in on Opera GX, finally. Still, you guys really need to optimise the 2SV function better if you're not gonna budge on making it mandatory for file attachments.