First, regarding the login issue:
Chances are your browser is set to block 3rd party cookies / cross-site data. As we use an SSO (single sign-on) across our sites, this security requirement is required for you to disable or allow explicitly for our sites to work properly.
Clear the cookies and enable cross-domain / 3rd party cookies for the following domains:
The mouse / click issue, is it a problem with any other applications?