Hi yes you will find that you actually do need to use the 'claim' function rather 'claimall'... I just wasted about €9 trying to make MyEtherWallet 'claimall' - you need to go to 'claim' in the drop down under contracts and then enter the period under which you contributed for tokens. When trying to 'claimall' I was repeatedly told I was 'outof gas' when trying to claim the tokens... being relatively new to this I tried repeatedly, raising the gas threshold, but wasted money each time, as 'claimall' doesn't seem to be the way to go... you need to use 'claim' and enter the period which you're claiming for...! (In fact just follow the instructions on the EOS website!)