IOS canSave return false with license key

When I am using professional license key with demo project I am not able to use the features . Stuck a help will be appreciated.
Thank you in advanced

Hi,

you can use save method only in a writable folder (like Documents folder), otherwise canSave method returns false.

I didn't get you exactly where to create writable folder and how.
One more thing if I change writable method to True then it allows me to edit pdf but unable to save it same for cordova plugin

Hi,

you can take a look at this article to better understand the iOS file system