"need to read your detailed steps to see what went wrong"
Sure. What do you do after you click the button with the three dots (...) after the warning symbol? If you go through the steps in the manual and you are not getting the fields populated properly (warning symbol goes away), then write down, step by step, every action that you take after clicking on that button and someone should be able to see what step is missing.
One of the forum moderators • AC 25 USA and earlier • MacOS 11.6.3, iMac Pro