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Enter Registration Information

After payment you will receive an email with registration infomation. It looks like this.
Select and copy the lines with User Name and Registration Code. The easiest way is to select all (Ctrl-A) and copy (Ctrl-C), however, this may not work with every mail client. You can also use the mouse to highlight the lines and then click "Edit" - "Copy". It's ok to select and copy too much as long as the important lines are included.
Start Sokoban. Click "Help" - "Enter Registration data" as in the left picture. If the Trial period has expired, click the "Enter Reg Info" button as in the right picure.   
The "Registration Data" dialog that pops up will now be filled in with the correct data. Click OK to finish. If the information is not filled in already, please perform step 2 again. Then click "Copy from Clipboard".
Note! Do not attempt to write the information manually since it is very difficult to distinguish between the letter O and a the digit 0 or the letter I and the digit 1.
Wait a few seconds and make sure that the "Trial" text in the title bar disappears.