Doesn’t appear on product

I don’t know why, suddenly is not working find, after update, is doesn’t appear into product post, and I saw into plugin section, when you are creating your own fields, the row “location” where you select type of post, and create the rule, it not appear.

If you press publish, then after refresh appear but is not saving what you select, and after puclish, it disappear again.

I don’t know how to explain better without add any picture.