How to definite Huion Note App is offline. As long as you don't enter note-taking area as below, when you write in Huion Note Hardware, it's offline note-taking.
Sometimes you may take notes when Huion Note App is offline. Once you open Huion Note App, there will be an automatic pop-up to inform you of note synchronization.
Or you can actively synchronize offline digital notes with the original notes if there is no pop-up reminder.
Once synchronization is finished, you will find the notes are added in a new page instead of the previous pages with original notes. If you want those notes to be in one page, then you can merge them as the following steps
③choose the notes that you want to merge
④Click on "Yes" if you are satisfied with the merge preview
⑤After synchronization, below is what it is like.