Need help with Nodus Upgrade

Today when i was using Nodus, it popped out a screen saying that i was to update it, and I updated and dunno what to do with the NodusUpdate file.
I dont know what to do and I cant play Minecraft, so I force update and the NodusUpdate file is still there. I need help on how to update this Nodus client, Please help me guys because I only use Nodus client.
Another Question: If i do not upgrate it and use old version does it still work? And if it works will my account be in risk?
Please help me quick and I'll thank you

---------- Post added at 09:31 PM ---------- Previous post was at 07:51 PM ----------

@Blaze Can you help me? Maybe you're good with Nodus Client since you released

hey,if you get the older version there will be no bind s like x is gone no xray l no fastbreak r no flying so.i am messup withthe update to so i went to you tube to download the updated version and that worked try that