When I edit an entry, the custom fields aren’t there. If I open the screen options, they are checked to show. If I uncheck and recheck them, they’ll appear. I can make a change but as soon as I click update they disappear again and I have to uncheck and recheck under screen options to make them appear. Anything I do change is saved though. This happens on a new entry as well. Thanks in advance.
For anyone running into this issue, my resolution was deleting the htaccess file that sucuri security plugin had put in the wp-content folder to prevent access to any .php file. these posts were helpful in putting me on the right track.