I too am experiencing issues with the repeater it’s not saving any of my fields but it is recognizing it because theme code pro is showing the code . . .
I think it could be a plugin issue as that i loaded it on a fresh local install and I have no problem there. Still working at it. I just hate turning stuff off and testing
Essentially I make a repeater and then save the repeater that I just made and then ACF/WP deletes what I just did from WordPress — I am using ACF 5.6.2 and WordPress 4.8.2 and this happens in both my Local and Staging. Any help is appreciated.
I have uploaded a video screen capture to show you all. The video is from my local install.