Cannot Login to Restricted Pages via iPhone 6 and ipod-iTouch

I’ve been getting complaint/support requests saying that members cannot access restricted pages when they attempt to access using iphone6 or ipod/itouch. They are able to access the same restricted pages using laptops, but not using the above. Are you aware of compatibility issues of this nature? Is there a solve for this? A setting variance? I need to have a solution for these people. What do I do here?

Thank you,

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