Well notice, checkbox or whatever, at the end of the day gateway does not care if claim is valid or not and its not worth to do such products.
Last one was auto-poster to facebook, it took months to setup api and there were still complains on plugin that its provlem there, not with people not having correct api.
...soo, lot of work, initial payment, regular payments to keep it up to date and still does not mean it will be useful and brings any benefit.