Sorry about the delay, That is the only draw back that I have found when dealing with China, Our day (Vancouver Island Canada) is their night. Here is the link to purchase the Dr.Ex.
https://www.amazon.com/dp/B0BM5QRB7H
I bought it loaded on the tablet reaady to go, partially because of the note at the bottom of his Amazon page, "
- Attention: If you find any malfunction or other software technical issues during the use of diagnostic tools, please contact me for remote resolution. Thank you for your cooperation."
I also did not have a tablet. If you do need assistance you can contact him on his WhatsApp. Just scan the pictuer below. He also sells parts at very resonable prices, all you need to do is ask him if he sells it.