social club isn't saving my snapmatic photos.
When you take a photo in Snapmatic you have to Save it first.
Then you have to pause the game, and go to the "Gallery" menu.
There you will see all of your Snapmatic photos.
You have to select the one you like, and there should be a button to upload to Social Club.
Then you can find your pictures on the Social Club website.
This is the case on Console at least, so I assume it works the same on PC.