When using aircraft with simbrief/navigraph integration, specifically the Inibuilds A350 and also the Ifly 737 Max, when it opens my browser (firefox) to sign in, after i enter my login details i get a page that says object moved to here, weirdly enough it sends me an email with my 2FA code however the authentication page to enter that code never appears on my browser. I have used other browsers, private windows with cache and cookies cleared but does not seem to fix it.
Thank you for providing the screenshot; it helps us understand the issue better.
To resolve the problem, please check the settings in your Firefox browser. In the settings menu, look for the “Applications” option, as shown in the screenshot below.
i did the step you said. After pressing flight plan request on the ifly 737 max and having generated a flight plan with simbrief, i was shown the object moved to here page, however when pressing the link under ‘here’ it took me to the page to enter my navigraph auth code, it then authenticated successfully so it seems the issue has been resolved