Bug fix: Paymenter

[opastorello]

✍️ Description

The Debian system version was written with the first letter capitalized, causing a bug during installation, changed from Debian to debian. The way to call the application name was written incorrectly, it was APP and it should have been APPLICATION.

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• Related PR: New Script: Paymenter #1827

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✅ Prerequisites

The following steps must be completed for the pull request to be considered:

• Self-review performed (I have reviewed my code to ensure it follows established patterns and conventions.)
• Testing performed (I have thoroughly tested my changes and verified expected functionality.)

🛠️ Type of Change

Please check the relevant options:

• Bug fix (non-breaking change that resolves an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change unexpectedly)
• New script (a fully functional and thoroughly tested script or set of scripts)

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📋 Additional Information

I noticed that the header is not being displayed, I didn't identify anything incorrect, the paymenter file is in headers and the function is called.