Client Response Module Issue

[rod_barbee]

The icon issue you’re seeing is because of the changes in how Font Awesome is deployed.
see:

Upcoming Changes to Font Awesome

Hello! Font Awesome changes will be forthcoming in our next release of Backlight 5. There are a handful of motivating factors for these changes, including, but not limited to … GDPR concerns, such those those voiced in threads such as this, and … as a result, Font Awesome having become a support concern/headache both for ourselves and our users; the fact that Kookaburra does not use Font Awesome at all, which is a part of … a general interest in removing outside/third-party dependencies from …

Upgrading to Backlight 5 will solve the issue.
If you’re staying with Backlight 4, see this:

Font Awesome 5 Free Unicode Fix - TTG Tips and Tricks