Hello @R19S, thank you for reaching out to us here at The Community, my name is Sherissa and I am more than happy to assist you today.
Here is a link to turn off Multi-Factor Authentication, this should work since TSheets is apart of the QuickBooks and Intuit Family of Products.
If it does not work then it is apart of a known issue that our Support Team is tracking and working on.
If that is the case you will need to reach out to our Support Team and let them know about the issue you are having so they can tag your account with the known issue and can reach out to you when it is resolved!
I hope this helps and if you need anything else please feel free to reach back out to us at any time.
