Expert Vba Macro Fix and Optimization for Excel Financial Control Model

We are seeking an experienced VBA developer to review, debug, and optimize macros within an existing Excel (.xlsm) financial control model. The file contains multiple sheets and structured tables, with macros primarily used for data entry functions such as "Grabar", "Limpiar", and "Borrar última entrada" across monthly sheets and a payments log. The current issue is that these macros are not functioning correctly on a laptop, likely due to compatibility or code-related problems. The primary goal is to restore full functionality and ensure reliable operation without altering the existing formulas or structural integrity of the workbook. The successful freelancer will be responsible for a thorough review of the VBA code, identifying the root cause of the issues, and implementing necessary fixes or optimizations. Compatibility with current Excel versions is crucial. The project requires maintaining the current logic and structure; no redesign is needed. Deliverables include a fully functional .xlsm file with all macros working as intended, along with cleaned and documented VBA code featuring basic comments to explain each macro's purpose.