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  • The only thing I see in your code that might be an issue is that you should have === false as == will match 0, but this would only happen if they entered without an address.

    if( is_string($value) && strpos($value, '') === false ) {

    What type of field is this? I’m assuming it’s a text field, what I mean is, is it a sub field of another field like a group field? If it is try using the field key instead of the field name.