Hi, thank you for praising. However, this answer is a bit disappointing.
First, Microsoft ended support for Windows 7 in January 2020. And Lovely Composer was released in 2021, so we are not using Windows 7 due to security concerns, and we haven't tested it on Windows 7.
Some version of Lovely Composer may have worked on Windows 7, but that's a coincidence.
Therefore, if you want to use Lovely Composer, you need to upgrade to Windows 10 or 11 or use another PC. (I don't know if it's possible now, but I used to be able to upgrade for free)
You can also contact itch support by email with your receipt infomation and get a refund. https://itch.io/docs/legal/terms#refunds
We hope this answer will help you. Thanks!