I'm not sure, to be honest. I think GDPR would grant you access to the personal data the service holds of you, but AFAIK they have no obligation to keep the data, so they could have previously removed it (?).

There must be a provision for that I guess, since otherwise companies could potentially react to GDPR requests of access by nuking all the information they hold about that user and then replying they've got nothing, which would be a major hole. But I honestly don't know.