1. Copy the "invitation code" from Access Request page.
2. Please click on "Sign-in" button:



3. Navigate to "Redeem invitation" tab:



4. Please enter your Invitation code copied from step 1 and tick the check box, and click the button:



5. Now click the "Azure AD" button:



6. the page will be redirected to sign-in page, please enter your username:



 

7. please provide your password and click sign in: