Hello!
We updated our server.
Now we working with base client from 1-3, so you need download new client full for play FASTMU
Download and play 
If you see some issue please report to me, we will fix it as fast as possible!
Remember too that Windows update sometimes and bug our encryptation
Disable Win Defender and Antivirus for playing
Probably your main.dll got deleted, download again after disable those things
Also you can add this: https://muhelper.com/Tools/VisualRuntime_C.rar (Install it!)
=D
server time
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