iPad resume saved state issue

I have developed a training whereby the lessons are all on a home screen.  the user has to select each lesson to be brought to the content.  The slide is set to resume saved state.  The buttons are set to disabled until audio completes and then they are set to completed when a variable changes.  The module works perfectly fine on a computer but it won't work on an iPad.  I can review the first lesson but then when i return to the home screen, I can't click on the second or third lesson.  I'm wondering if there's a known issue on the ipad with resuming a saved state or if there's a work around for this issue.  Here's the layout of the screen.  Thanks for the help!!!

Here's my trigger panel for this slide

T