Depending on the security settings for your browser - you may be logged out of BCA Research whenever you close your browser. You can follow the steps below to disable this behaviour by preventing your browser from clearing your cookies when it closes.
Settings > Privacy and security > Cookies and other site data Disable > 'Clear cookies and site data when you close all windows'
Settings > Privacy and Security > Clear browsing data on close > Deactivate 'Cookies and other site data'
Settings > Privacy and Security > Cookies & Site Data > Uncheck 'Delete cookies and site data when Firefox is closed'
Preferences > Privacy > Block all cookies