There are several cases when the file can not be opened.
In case 1 and 2, re-install the program or download it again.
There is no program that can open the AI file. Adobe Illustrator or Photoshop. If you request format conversion to JPG or PNG file, I will resend it to your purchase email within business hours.
Please fill in the name and e-mail address of the buyer and the file format and size you want to convert and send it to the following e-mail address.