Changes in User Form Not Saving

[Marcia]

Hi all.
I am attempting to create a payroll user form with help from Copilot. I have made progress except for an issue that has stalled me for weeks. When I select Source Month say February, JEV Ref and an Employee Name, click Save to open the salary details of the selected employee, then make changes to any of the fields, click Save again and close the form, the tPayroll2025 should reflect the changes. But to my great frustration, the changes were not saved.
I would greatly appreciate any help in correcting the code. My programming skills is next to nil so I really don't know what is lacking in there.
Thank you as usual.