The most likely cause of the issue is that the ScreenSeize program is not compatible with the version of Windows you are using. It is recommended that you try updating the program or using an alternative program.
Unfortunately, it's impossible to say if the ScreeSeize works on Windows 10 OS or not because there is no source to acquire the information. I've searched the web with hope to find the available details regarding compatibility, but it appears that ScreenSeize was discontinued a very long time ago.
However, there are far more advanced solutions nowadays that you can use as a replacement:
It does not capture the selection in my window.
The most likely cause of the issue is that the ScreenSeize program is not compatible with the version of Windows you are using. It is recommended that you try updating the program or using an alternative program.
Unfortunately, it's impossible to say if the ScreeSeize works on Windows 10 OS or not because there is no source to acquire the information. I've searched the web with hope to find the available details regarding compatibility, but it appears that ScreenSeize was discontinued a very long time ago.
However, there are far more advanced solutions nowadays that you can use as a replacement: