Delete Workbook links not possible

Hi guys

When opening the spreadsheet (in Teams), the following error messages appear every time.

"UNABLE TO REFRESHWe couldn't get updated values from a linked workbook."

Next to this text, you can press a button with the inscription

Manage Workbook links

. When I press the button, three links are displayed.
When I click on the button to break the link NOTHING happens. The button is not grayed out, it can be pressed normally. But nothing happens at all.
2021-10-20 09_32_13-MMA_MEB_Global Excel.png

Has Anyone an idea how to get rid of these links?

Furthermore, does anyone know how to prevent the TEAMS Change Log from being deleted if you download the file once to the desktop, change it and upload again?

Furthermore, does anyone know how to prevent the TEAMS Change Log from being deleted if you download the file once to the desktop, change it and upload again?

DON'T download it. Instead, use the Open in Desktop App option.