Pretty folders do not fix a book that is a week behind. The habit is boring, and it is the whole product: the same name every time, write the sale the day it happens, and don’t mix a credit sale with a payment.
Start from today, not from three years ago
If you are coming off paper, put today’s balance as an opening figure, then only new entries. Retyping three years of notebooks is how people give up. Two names for the same person is how you end up with “they owe 80” in one place and “120” in another.
In Kaymn that is one list and two buttons — Receivable when they owe you, Payable when you owe them or they are paying you down. Seven-day trial.