Excel spreadsheets won't open in Numbers 10.3.5
I was always able to open Excel spreadsheets in Numbers but since upgrading to Catalina (10.15.7) and Numbers (10.3.5) and the latest version of Excel (16.16.27) the Numbers sheets open but they are completely blank. This is true for Excel sheets created years ago, not just recent ones. None of my Excel spreadsheets open. The Excel cells and data don't show. The problem started after the Numbers upgrade and before the Excel upgrade so I think the problem is in the Numbers program.
This is BIG problem for me because I greatly prefer working in Numbers
Sam Lux
MacBook Pro 13″, macOS 10.13