Cannot Move from "Bookshelf Tab to "Help" tab In Read2Go

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iOS & iPadOS
I have Read2Go on my iPod Touch 5th Generation. I want to read more about how to use Read2Go, particularly with a braille display. I try double tapping on the "Bookshelf" tab, but the words "Next Section Button" pop up on my braille display and the "Bookshelf" tab is still selected. Any ideas on how to fix this would be greatly appreciated! Thanks!

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