WordPress Speed Up Service | WordPress Website Maintenance Packages Reply To: Password Protected Content – Mobile incompatability?, by James Huff It’s likely being blocked on mobile browsers as a security measure, and honestly should be blocked on desktop browsers too. You should never under any circumstances be able to enter a password into a frame injected from another domain. It’s a common practice employed by bad people to steal passwords. Why is the site loaded via frames, why can’t you properly map the domain to it? Reply To: Password Protected Content – Mobile incompatability?