After more testing I’ve found the cause of the issue. It’s not the renaming of the field.
The problem is when I try to save a field that has a URL in it. Renaming the repeater field simply made it so there wasn’t any URL to be saved in the fields.
So in my sponsors repeater field I had a text field where I entered a URL into it.
I tried switching the field to a URL field instead of a text field and it’s the same issue.
So the issue is trying to save an options page with a url as one of the fields that’s causing the 404.
Any idea why this could be happening?
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