What worked for me was saving the Excel file as a .csv before importing it into InDesign. The .xlsx format can sometimes be finicky with InDesign, especially if there are formulas or other complex elements. Also, double-check that your Excel sheet doesn’t have any merged cells—those can mess things up too.

I remember reading some good tips on https://www.myexcelonline.com/ that really helped clean up my Excel file before importing. It might be worth checking out if you’re still having trouble!