I have surfed the Soma website in large and I didn't find any reference to the fact that Soma is an ERC-20 token. If there is a reference, then it's well hidden. How do you expect people to invest if they don't even know what the SCT actually is and where you can store it?
Now I'm starting myself to doubt it actually is an ERC-20 token... (I know for sure it WAS at the time of ICO, but sometimes projects do switch to an own blockchain)