Hi @sheryllewood,
Welcome to Trend Micro Community!
We're sorry for any trouble this issue may have caused you. We've released a new version of Trend Micro Mobile Security for iOS: 11.2.1071. This update solves the problem from the previous version (11.2.1070) and reverts the changes made to Web Guard.
Please ensure you update your Mobile Security to version 11.2.1071 through the App Store. To update the application:
1. Open the App Store on your iPhone or iPad.
2. Search for Trend Micro Mobile Security.
3. Tap the Update button beside TM Mobile Security
Hope this helps!