You should be able to access the User Portal using the URL https://server_hostname/userportal
e,g
(If you have issues accessing the RAS server console, navigate to Farm > Secure Gateways and check the properties of each gateway, particularly the "User Portal" and "Web" tabs, to ensure they are correctly configured.)
Enter your username & password, then click on Sign In
Next, enter the Second factor, which in this example is the OTP...
Click OK
