Can you share the Excel import Template and the Worksheets of the Excel?
A common error is that the Template is referred to the wrong Sheet. If I want to import Score, I need sheet number 3 as the first start with 1.
Go make it
Open the file in Office and save . When we download the file which is created in diff provider then it won’t recognize the file .
You can try ditching your existing excel which you got from other tools.
Make a brand new excel with one sheet and contents and save it as .xlsx.
Then try importing. Good luck
Please share your template configuration screenshot here