Hi,
Nice plugin, but it has a bug on the admin side of the posts.
If you make the mistake to enter a height under “masonry content options”/”Min Height of content” a value, there is NO WAY IN WORLD to get that deleted afterwords. EVER!
No idea where and how your plugin saves these value, but that definitely IS a bug.

It’s a new install, I have no caching plugins and stuff, and it happens only with your plugin anyways.

Any fix? Thanks!