A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data
Without file, it is hard to say what's wrong in it. I'd suggest you create a support ticket to Microsoft. Support engineer can remote to help you on it.
Please contact your admin/IT department create a support ticket via Microsoft 365 Admin Center> Support> New service request. Support team there will have the correct channel and resources to help you investigate more and find what exactly the reason has caused this situation.