I have a BraillePen12 that I use regularly with my iOS devices. Today, though, I cannot get the unit to power on after checking the battery this morning. I'm running out of ideas on how to fix the issue; I cannot reset the device, because it has to be on in order to do that. I've looked through every manual and other web site, And I don't know where to turn to next. I was wondering if there was anything that I could have possibly done with my iPhone to cause the unit to not power on, when I know it has a full battery? Is there anything that I can do to fix this issue? Any help is greatly appreciated. Thank you.