Unable to sign in to my account. After filling in log in details the page simply reverts back to the initial sign in page

Hello . I am unable to sign into my Norton 360 account . Windows 11 home-no error message.After entering my sign in details and clicking next the page simply goes to the initial sign-on page from which I began- i'm in a continual loop which is a real pity as I'm trying to install on a new computor.