I’ve been encountering this quite a bit the last couple of weeks as well.
The latest site was running 5.7.3 and was showing “Automatic update is unavailable for this plugin” on the Plugins page. I went to Dashboard -> Updates and tried running the update there, which failed saying the package was not available. I refreshed the Updates page using the “Check Again” button, then went back to the main Plugins page and the notice was gone. I was able to successfully update at that point.
Will have to give it a try on the various other sites I’m working on to see if that works consistently.
Welcome to the Advanced Custom Fields community forum.
Browse through ideas, snippets of code, questions and answers between fellow ACF users
Helping others is a great way to earn karma, gain badges and help ACF development!