Before you start the client you need to choose one of those 2 locations servers.
DIV01 : Middle East
DIV02 : Europe

To change server location you need to wait for 5 seconds after choosing the new location then press on save settings.

Incase you get an instant disconnect (DC) when you login like the picture below , then you need to download the first DLL and put it into your game folder then try again Click Here and if it doesn't work , try this one Click Here

Incase you couldn't see the background of the game when you login like the picture below, then you need to download this files and add it into your game folder Click Here

Incase you face an instant crash after logging with S-bot you need mark on disable enhanced security then press save settings.

Incase the launcher has stopped working like the picture below, you need to follow these steps

Step 1: Open Run (Start + R)
Step 2: Write this command SystemPropertiesPerformance and press enter

Step 3: Click on Data Execution Prevention

Step 4: Choose the second option Turn on DEP for all programs and services except those I select.

Step 5: Click on Add.

Step 6: Add these files from your the game folder.

Incase you couldn't update the client and got [Error Code (4)] like the picture below.

You need to delete temppath from the game folder then reopen the launcher and let it update.
If it doesn't work you will need to change the server loaction like the picture below.