I know this is like the millionth time I asked, but I won't stop unless it gets updated or get a reply why it's not getting updated
Please update noteblockAPI: https://www.spigotmc.org/resources/noteblockapi.19287/
The current version on minehut doesn't support the newer .nbs format by the newer open noteblock studio: https://opennbs.org/. The newer version does.
I tested in a paper 1.16.1 local server, and yes, it works with 1.16.
Thanks!