when on my tablet documents appear to open but are just black -- including instruction manual Android version 4.0.4 app version 3.0.48-2
nothing in help about this phenomenon- please advise
Probably, screen backlight brightness in CoolReader is set to very low value. Try to remove .ini files from SD/.cr3/*.ini
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Probably, screen backlight brightness in CoolReader is set to very low value.
Try to remove .ini files from SD/.cr3/*.ini