Sorry to hear about the issue. It sounds like an error was preventing thhe validation from completing. Are you able to swap back to ACF PRO and open your console log to check for any JS errors / AJAX response on save?
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Browse through ideas, snippets of code, questions and answers between fellow ACF users
Accordions are a great way to group related information while allowing users to interactively show and hide content. In this video, Damon Cook goes in-depth on how to create an accessible accordion block using ACF PRO’s Repeater field.https://t.co/RXT0g25akN