Hello Yourry8. I'm not part of CGT management, I'm simply a vendor.
Did you try to rename the files and see if you can open them? Regardless, you can send a personal message to the seller who did the product you bought. One of the strongest point here is the direct link between sellers and customers, We are all here to make a living, so giving you support is in our best interest. Failing that I think you should get in touch with the management, but please try the PM first. I hope this helps, best regards.