The official format for WinISO 7 license keys is four sets of four alphanumeric characters, like this: XXXX-XXXX-XXXX . If the key you see looks significantly different (e.g., a 64-character string), it is likely for an older version of WinISO or is a fake.
If you are upgrading your computer, you can move your license: winiso license key hot
You can purchase a genuine license key directly from the WinISO Store. They often offer "Lifetime Licenses" so you only have to pay once. The official format for WinISO 7 license keys
WinISO offers a free trial that allows you to test the interface and basic features before committing financially. a 64-character string)