Hello Marina,
Welcome to Microsoft Community and appreciate your time taken for sharing detailed information. It seems that we switched from the new version of outlook to the classic version, but the task view did not switch back. We’re sorry for any inconvenience caused to you.
Sometimes after we switch versions, there may be a small number of Settings not successfully switched. Have you tried to restart the computer and outlook to see if there is any change in our task? If it’s still not work, we suggest to reinstall the old version of outlook.
If unfortunately, our task view still does not recover, we may need to submit a ticket in the Outlook to investigate the reason. To contact in-app outlook support for more professional support, please kindly click Help- Contact support.


Your kind cooperation and patience are highly appreciated.
Warm Regards