The multipool has been closed since December 15 and so the 500 MH someone is running is going to waste. Also, they are no longer trading Dash, and you need to retrieve your funds, if you have any there. Please see:
https://support.cex.io/hc/en-us/articles/214379428-Multipool-Suspension-and-Altcoin-Removal
https://support.cex.io/hc/en-us/articles/214379428-Multipool-Suspension-and-Altcoin-Removal