I recently purchased iSilo 5.26 for my iPad 1.
However, I frequently encounter freeze-ups during reading, usually occurs when I try to change to next screen or drag the content.
I can use the multitask function to switch to other apps.
But switch back to iSilo only shows black screen.
Then it quit to main menu after a few seconds.
After I restart iSilo, it begins from the start of the document and reset to default color and font size.

Does anyone know how to solve this problem?

Thanks