I get a reminder to update everyday but it doesn't update and locks up my outlook.
How can you tell what version your running?
Please try to go to Programs & Features and uninstall "OutlookTodoist". Then go to https://todoist.com/outlook download the installer from there and install it (with Outlook closed).
What number is the latest update?
Our system automatically asks for update if there is a newer version available to download from https://todoist.com/outlook - if you get this version manually, it will no longer ask you.
The version number is currently 18.104.22.168, but again - even if it's a bug, please try to reinstall it manually from todoist.com/outlook and let us know if the issue persists.