Yes this is very frustrating right now as there seems to be no reason why the wallet is in maintenance. They did the same thing a few months ago where the wallet was in maintenance for a month or so. Right now I haven't been using Cryptopia and just using CryptoHub as I'm accumulating more 421 coins by selling 30% of my 808 stakes but soon I will need to use topia so hopefully by then it will be fixed.