@renrique – I don’t know what “sniper code” means or what code you put in, but the end result is a page not found. The plugin has no influence on the page the button links to – – in this case, it’s a “Page Not Found” which means that page doesn’t exist.
I don’t believe there is any issue with the plugin but an issue with whatever page you’re trying to link to.
Please provide more information such as:
1] what exactly are you entering into the code snippet box,
2] what is its purpose,
3] what is the expected result,
4] how sure are you the code is correct / trusted source?
We cannot help modify your code snippet. We can only support if something is wrong with the plugin.