Click the in the top-right corner and select Settings . Go to Privacy and security > Site settings . Scroll down to Pop-ups and redirects . Select "Sites can send pop-ups and use redirects" . Mozilla Firefox (Desktop) Disabling Pop-Up Blockers - IT Knowledge Base
To turn off a pop-up blocker, you must navigate your browser's security or site settings. While these blockers are on by default to prevent annoying ads, they often need to be off for legitimate tasks like opening tax documents, bank statements, or online course modules. Google Chrome (Desktop) pop-up blocker i off