old post I know... but for others reading and are confused... set gwei at top of mew to a low value, like 10 - no point spending heaps to claim tokens, unless you're in a rush. ensure you use CLAIM, do NOT use CLAIMALL! (it will set gas correctly for you) you must know the period in which you sent your eth to eos.io public address.  you should be able to work that out by going too https://etherscan.io/address/xyz where xyz is your wallet address.  The transactions you've done will be listed, look for the one where you sent eth to eos.io - you should be able to work that out as it will show the value of the eth and the To will be EOSCrowdsale.  Take not of the age column for that entry, ensure its at least 24 hours ago or you'll burn through eth.  then go to https://eosscan.io and check the current period we're in, scroll down and you should be able to work backwards from that to determine what period you should be claiming from. eg: if it said "4 days ago" then period would be current period less 4. current period as I write is 296, it goes up to 350. enter the number of the period into the claim function then hit write. go back to https://etherscan.io/address/xyz and refresh the page, you should see a 0 eth valued transaction sent to eoscrowdsale. click the token transfers tab, that should update to show the return eos token value coming back to your account.