How to set up fop2 credentials

I did check there but I didn’t allow the read-only options. I changed the setting from “cxpanel” to “fop2” then the Operator Panel setting disappears from the startup screen mysite/admin/config.php. Then I found this:

I changed it to /fop2 but same result. Operator Panel disappears from from the startup screen.

Still working on it.