The test here works Adobe Flash Player issues with Windows 10 (Microsoft Edge)
but my game doesn't. I don't know what is happening so I can't troubleshoot anymore. Thanks.
What is the OS Version of your system (Settings > System > About)
What is the direct link to the game that is not working?
First, confirm that ActiveX Filtering is configured to allow Flash content:
You can try to work around these issues by using Compatibility View:
If that is too inconvenient, using Google Chrome may be a preferable alternative.