It seems that there is a slight bug in the admin side. We have a fresh, unadulterated nop 4.20 install and installed your Avenue theme (no other additional plugins). When we go into "Additional Settings" for the theme and make changes to an "Info Panel" (i.e. enable/disable, picture, etc.) they do not take effect in the front end when we hit save. We have to do a "Clear Cache" for the settings to take effect. Changes in the main settings page of the theme do take effect immediately when saving, it only the items on the "Additonal Settings" tab.