When attempting to use the Login to Gainsight CS option on Gainsight.com, it does not allow you to choose which Data Center your tenant is on. This is not in line with some of our other login screens. For example, the Assist Plugin login allows you to select the data center, and routes you to the appropriate URL for you to successfully login to your tenant. 

You can use different links to the other data centers, i.e. auth.us2.gainsightcloud.com or auth.eu.gainsight.com. However, these are not accessible through the main Gainsight website.