@GoodGuyQ My guess is you’re entering the wrong user/password. You can add a new user in the webgui to test that out.
Here is my quick image item for reference
set username foglogin set password foglogin params param mac0 ${net0/mac} param arch ${arch} param username ${username} param password ${password} param qihost 1 isset ${net1/mac} && param mac1 ${net1/mac} || goto bootme isset ${net2/mac} && param mac2 ${net2/mac} || goto bootmeWith foglogin being a valid username and password