Is this with the Android version? If so, send me an email at mike@zubersoft.com and I'll hook you up with the latest build which will eliminate that check at startup.
If it's with Windows 10 (which I'm assuming it based upon your previous post), then it's pretty important for access to be available to the storage location. The problem is that, if you select a folder, delete that folder, then recreate that folder, the token that MobileSheets has stored to that previous folder instance may no longer be valid (I don't know how Microsoft handles this internally). Can you restore the previous folder instance from your recycle bin? There isn't a way for me to regain access to the new folder instance without bringing up a file browser for the user to select the folder instance again (that's how Microsoft requires the user to grant access). I think I'll modify that check at startup so that it gives you an option to select the storage location to grant access to it.
Mike
If it's with Windows 10 (which I'm assuming it based upon your previous post), then it's pretty important for access to be available to the storage location. The problem is that, if you select a folder, delete that folder, then recreate that folder, the token that MobileSheets has stored to that previous folder instance may no longer be valid (I don't know how Microsoft handles this internally). Can you restore the previous folder instance from your recycle bin? There isn't a way for me to regain access to the new folder instance without bringing up a file browser for the user to select the folder instance again (that's how Microsoft requires the user to grant access). I think I'll modify that check at startup so that it gives you an option to select the storage location to grant access to it.
Mike