Hello,
1) If you set the font in theme settings it writes path to font in the settings file. So, if you change the server you may face issue with fonts. To fix that you need to remove fonts from the wp-content/fonts folder and reset them in theme options again and save the settings. It will overwrite the previous path with the new one.
2) It’s not our theme option, so we can do nothing with this. Contact FB support.
Regards