@precies (would be hard to block one video and allow the same video on the same domain, but change in API or Code could be possible)..
Looks like its not an ACF issue, using default WP oEmbed error is there:
wp-json/oembed/1.0/proxy?url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3D1La4QzGeaaQ%26t%3D76s&_locale=user 404
{"code":"rest_forbidden","message":"Sorry, you are not allowed to make proxied oEmbed requests.","data":{"status":401}}
Tried/Tested:
– ACF some 5.x, old versions and latest
– PHP versions: 7.2, 7.3, 7.4
– WordPress version 5.2.1, …latest
– Themes: TwentyTwenty, TwentyNineteen, Storefront themes
