Which exactly the version you have? I tested it with 2017-04-26 and everything is OK, I can enter text only rows. Do you really have the VAT code column empty on the text row?
same v. 2025-02-24. New DB. Just forward balances (purchase, sales invoices) from 2024 and later. In your case does turnover per period differs or just fwd. balance differs and turnover is identical i...