[keycloak-user] Keycloak as an identity provider to Tableau

I'm trying to use Keycloak as an OpenID Connect Identity provider to a data analysis software called Tableau. I tried with two different instances of Keycloak.. one is locally hosted, and the other is from the master Realm in a remotely hosted development instance. I tried creating a Realm for the client, and tried also using the master Realm.. both came with the same result. Each time I get a message telling me that my Identity provider is not reachable. I tried editing Keycloak authentication request URL by adding the realm name, since it's not on Tableau's OpenID Connect setup (see screenshot), with no use. [cid:image001.png@01D39F54.7BE7E2A0] Am I missing something? Or doing something wrong?