If you've enabled this facility on your Loanapp account and would now like to disable it, here's what to do:

Sign into your Loanapp account, complete the two step verification process associated with the Multifactor Authentication. This consists of scanning the QR code on your phone to generate a special code and then entering that code on your computer screen. 

Once you've signed into Loanapp, click on your name at the top right hand corner and select Account from the drop-down list.

Your Loanapp Account will open and you will now be able to see Multifactor Authentication at the bottom of that page with Disable in Red. Click that button:

Clicking Disable will prompt you to confirm your password which will then log you out of your account and disable the whole MFA functionality.