Zclient disconnecting - Solution

Go to the downloaded folder of Zclient.
There should be some more items in there now besides Zclient.exe
Delete them all except Zclient.exe

Now, from that folder execute Zclient.
You will be presented with a blank Zclient.
Use the MAIL and pass that you also used to register with zloemu.tk  (Do not use the details of your dummy Origin account)
Click on Connect
You should get a response: Auth.success as .... (Name of your zloemu account - again NOT your origin account)
Zclient will remain active and open until you close it manually or restart your computer. When you see Disconnected again, you've done something wrong.

Zclient will also activate ZLOrigin
When you now click on ZLOrigin you should be logged in as the name of your zloemu account.
Click on My Games, look for Sims 4, hover over it and click on Download.