i need a little help. i bought sch tokens a couple weeks ago and i think i bought them straight from gdax (i think) which ive been told you are not supposed to buy ico tokens straight from exchange. but! none the less, when i log into skychain, it shows my balance of tokens that i bought and it says when ico is finished, the tokens will go to erc20 wallet. can anyone help me understand what exactly i should do? like what steps i should take to secure my tokens. thank you!! any help will be greatly appreciated!!