Try these troubleshooting steps if Pro Swapper doesn't seem to open.
First of all, please make sure you downloaded Pro Swapper from the linkvertise download
The filename should be ProSwapper.Client.exe, if Pro Swapper came in a zip file with a password it is fake, we recommend you delete it and do a virus scan on your PC using Windows Security or Malwarebytes.
After confirming you have a real Pro Swapper downloaded try the following steps.