Hello AlicjaKolodziej,
Welcome to Microsoft Community.
I am a Microsoft user just like you, I hope you are doing well.
To resolve this issue best, I will need you to remove Office apps from your device completely and reinstall Office 2019 from your Microsoft account.
Step 1: Remove Office for Mac applications
- Open Finder > Applications.
2.Command ⌘ + click to select all of the Office for Mac applications.
- Ctrl+click an application you selected and click Move to Trash.
Step 2: Remove files from your user Library folder
- In Finder, press ⌘+Shift+g.
- In the window that opens, enter ~/Library and then click Go.
- Open the Containers folder and ctrl+click each of these folders and Move to Trash. Note that some of these folders may not be present.
com.microsoft.errorreporting
com.microsoft.Excel
com.microsoft.netlib.shipassertprocess
com.microsoft.Office365ServiceV2
com.microsoft.Outlook
com.microsoft.Powerpoint
com.microsoft.RMS-XPCService
com.microsoft.Word
com.microsoft.onenote.mac
- Click the back arrow to go back to the Library folder and open Group Containers. Ctrl+click each of these folders if present, and Move to Trash.
UBF8T346G9.ms
UBF8T346G9. Office
UBF8T346G9. OfficeOsfWebHost
Step 3: Remove from Dock and restart
- If you put any of the Office applications in your Dock, go to each one and ctrl + click > Options > Remove from Dock.
- Restart your Mac to complete the uninstall.
For more guidance with uninstalling Office on Mac:
https://support.microsoft.com/help/eefa1199-5b58-43af-8a3d-b73dc1a8cae3
Step 4: Remove Office license files on a Mac using license removal tool.
1. Download the license removal tool. https://go.microsoft.com/fwlink/?linkid=849815
- Open the .pkg file from your Mac's Downloads folder.
- Select Continue and follow the prompts in the setup wizard.
- When you're ready to complete the license removal, select Install. You may need to enter your Mac's local admin account password.
After the tool successfully removes licenses, select Close.
Step 5: Reinstall your Microsoft Office 2019 from your Microsoft account associated with this license by signing in https://office.com/myaccount
For more guidance with installing Office on Mac:
https://support.microsoft.com/help/4414eaaf-0478-48be-9c42-23adc4716658
Step 7: Uninstall the License Removal Tool by dragging the Microsoft_Office_License_Removal file from Finder > Downloads to Trash
https://support.microsoft.com/help/b032c0f6-a431-4dad-83a9-6b727c03b193
Source: https://support.microsoft.com/office/ec3aa66e-6a76-451f-9d35-cba2e14e94c0
Please let me know if you need any more assistance.
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Warm Regards