I have been using Notes Plus for more than 8 years and so far is happy with the App. I am using iPad Air 2013 and recently i have updated iPadOS to 12.4.7 and Note Plus to the latest version 6.4.
After the upgrade, i found that all my notes are lost. All the folders are there but when I opened the folder, it showed sub-folder 1, 2, 3, 4… In the sub-folder, there is a folder called “resources” but nothing in the subfolder. All the created folders have the same problem.
I used to backup my notes to Dropbox and now I could not import back from Dropbox.
When I created a new note, it is normal but all the old notes in last 8 years have gone!