I use marginnote 3 primarily for annotating pdfs with a pencil. I would like to take advantage of the “handoff” app (on my Macbook Pro 2019 with OSX 11.2.3). It shows the pdf I work on, but without annotations, which for me defeats the purpose of the handoff.
We are very sorry for the bad experience. For your problem, you can try to update the system version of MacBook Pro.