I thought that the generated “option_name” for the fields might be too long, that that should not be the case. with these field names.
Like I said, I’ve tried this several times and if I do get_field('repeater_name', 'options'); it always returns an array for me. I just tried using the field key with the same result.
The last thing that might cause this in ACF is the name of the repeater field itself. Do you have any other fields on any other options page with the same name as the repeater fields? Field names used on options pages must be unique site wide.
