@VanKalkerFarms That's something our support team can help with but not something you can do as a seller on your own. 

@LizO do you have more details on why you'd need to log out a device remotely? I'm curious about the use case. Feel free to reach out to our support team over phone or email if you do want to proceed, or reply here with more details about what you'd like to do. 😊

If you are using devise codes you can deactivate them.  If you are signing in with your email address and password the only thing you can do is change your password.  

Thanks for your post @Stacilynn, and for your helpful reply @RHatch!

@Stacilynn you can also call our Support team who can log you out of all devices. They'll need confirm your account information over the phone so do give them a call when you can.