N/A replacing payee

Hi, I am using Reckon Home and Business 2022. When I enter a transaction the payee entered is replaced with N/A and I have only noticed now this has happened for some payees for about 18 months. I have tried editing to the correct payee in the transaction, deleting the transaction and re-entering, editing in the search list for N/A and adding a new payee directly into the the memorised payee list. Each time I close the programme or back up it reverts back to N/A.

Grateful for any assistance