What does it means closed for new participant?
I can't understand when should i participate and which round is opened for new participants. Does there any chance to join this compaign???
Simply means that we are not accepting new participant for the campaign. So that the participants payments would not be too low.
Should add it to myEtherwallet so we get the token?
Yes, you can add it to myetherwallet wallet for it to show up in your token list. You'll get your token once the campaign end or when the ICO end.