If none of the settings are showing up in the live site and you are not using a cache plugin, then a few more things
- Paste here the content of the system info box found in Xtreme Admin > Theme Help page
- Make sure Xtreme theme and plugin are on the latest version
- Deactivate ALL non weaver plugins, and see if that fixes the problem. If so, reactivate one by one testing in between to find the culprit.
- Last, go through all the points in the article below
https://guide.weavertheme.com/settings-wont-save-from-customizer/