Hi there,
Good job and eye on getting it sorted and Yes, I found the V2 I had been sent a month ago, Here they are I see they should be pin to pin compatible I think the GPIO’s I was thinking may be just because the Example is a C3. I’ll plug them in and see what’s what.
I had a example or demo on here i think as well, under epaper or eink?
Glad you got it going though the SPI frequency is odd that it’s different. but need to look to the details. 
Please mark YOUR post as the solution so others may find it. It’s a great example of reaching out and solving your own issue by just chopping it up about the issue. Great Stuff!
GL 
PJ 