Here's what happened to me: sent 1 bitcoin from localbitcoins to bitcoin fog and set the withdraw address as one from Helix, and set that to auto-helix to my Tails wallet. The result was only about $8 worth of bitcoin made it to my wallet, all because of bitcoin fog's 6 hour wait rule, and then they discard the address after 10 hours. I'm so pissed! Total waste of time and money. Will never use it again.
lol bitcoin fog has been known for scamming since forever, just do your research on a tumbler before throwing your money into it