From StackDX website hover Login and click StackDX option
Enter your company email and click Continue
Enter your password and click Sign in or Continue
There are two methods of signing into StackDX - via Microsoft or Username & Password. Your login method will depend on your company settings and if your email is connected to a Microsoft account.
After entering your email you will be directed to sign into your account using either the Microsoft or Username & Password method.
via Microsoft
Username & Password
Note: If your email has already been authenticated by the browser, after entering your email you will be automatically logged into StackDX. You will always be required to enter your password if you clear your browser cache/cookies or when logging in using an incognito/private browser.