Please let us know: library@leedsbeckett.ac.uk if you have attempted the above steps and you still can't log into Discover, apologies for the inconvenience.
In the meantime you should be able to access resources that require authentication, apart from those via Discover. Your subject page will have other databases: https://libguides.leedsbeckett.ac.uk/subject_support.
If you are seeing a 'HTTP ERROR 401 Unauthorized', when trying to search you will probably need a manual password reset, please contact the library.