You will need to log out of DebtCol and then run the windows 10 patch (attached).
You will need to open the file then click on extract
Click on Extract all then select a destination to extract the files to and click extract
It will then ask for a password this is 123
Once this is entered it will open a box with the files in it you need to right click on the DebtCol Win 10 Patch.exe file and right click and select Run as administrator to run it.
You will then receive this message
You will receive this pop up click on More info
And then click on Run anyway
You will then be prompted to allow the publisher to make changes to your PC click Yes and the following box appears
Click install Patch and this should fix your display issues. Log back in to DebtCol