Hey Kelsey,
We’ve had a small percentage of users report this issue and haven’t yet been able to get to the bottom of what is causing it. As a temporary solution, you can switch to a copy of the plugin before 4.3.12 (like version 4.3.11).
You can download this version of the plugin by selecting the version in the dropdown on this page: https://wordpress.org/plugins/wptouch/advanced/ and uploading to your site through the manual plugin upload area (Plugins -> Add New -> Upload Plugin).
Once we get a fix out I will be sure to update you on this thread. Please let me know if you have any questions!
Regards,
Zach