Custom Receipt Modification for Loyverse

I'm seeking a professional expert in Loyverse system. I need the customer's total sales and spending for the current month printed on the bottom of their receipts.

Requirements:
- Modify Loyverse to include the customer's total sales and spending in the current month
- Ensure this information is printed at the bottom of the receipt

Specifications:
- The receipts are printed using a thermal printer.

Ideal skills and experience:
- Proficient in Loyverse system modification
- Experienced with thermal printer receipt formatting
- Excellent attention to detail