Did you check the Link of the images (is the path wrong?) or used the dev tools to have a look at the images? Looks like it is not an ACF thing because the right amount of images is added to your html code.
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2022 was a big year for Advanced Custom Fields, with more capabilities, a new generation of ACF Blocks, a refreshed UI, and a new home. Our year in review post looks at advancements we’ve made and offers a glimpse of the future. https://t.co/HahJUCcyH4