Decentralized exchanges are however very good in terms of security system. I am very sure responsible Exchanges go for maintenance just to make an upgrade or reconstruction of what they are lagging behind with while some with the intention of stealing or running off with their users funds. This is decentralized exchange which is not functioning any longer for now, due to the maintenance activities, that has taken over months. I wonder the type of upgrade this exchange is undergoing for it site, this has made their users hopeless and more concerned about their funds. This Exchange did went off without the knowledge of the users. Halodex Exchange sells and buy cryptocurrencies during it activeness. I have a pity for the users whose funds were taken away due to the upgrade.