After careful consideration of your case, AskGamblers Complaint Team reached to the conclusion that you must forward the dispute in front of the relevant Gambling Authority directly as they are the only competent authority to conduct proper investigation and reach to justified decision whether there was any breach of the regulatory requirements or not.
Hmm... I guess that can be read as they don't have the proper tools [specialist] to investigate, photo-forensic, glitch-trailing, or the likes, that'll be able to help you. Given your game is casino-related and not sportsbet [are they not?], mind to try CG? CG can probably help you if they're better equipped with team capable and having expertise in the field.