Just for future reference the acronym used for "My Ether Wallet" is MEW.

@edb1984 thanks for notifying, it was a typo. I have corrected that.

"you must have to transfer your EOS coins to the wallets and registered them to the ethereum address before within 23 hours after the end of the final period on June 1, 2018 at 22:59:59 UTC"
What do you mean before and after?

It means to say you have deadline until last hours (i.e 23rd hour) of June 1st, 2018. I hope you will understand now.

Thanks!