[keycloak-user] Vanilla not working

Hi there I am completely new to jboss & keycloak, so... I installed keycloak 6.0.1-2 and wildfly 16.0.0-1. Both products run after carefully following the quickstart instructions : I can create users in KC, the vanilla page displays, etc. However, when I click on the "login" button, the basic auth window raises and the entering correct information does not unblock this (I am looping). I ran jboss-cli and I can see keycloak stuff in my wildfly standalone.xml... Any idea ? Thank you in advance P