Thanks for using our theme.
1) It looks like a cache problem. Do you use a cache plugin? Temporary disable it, or clear all cache including cache of browser.
2) Sorry, but your question is a bit unclear for me. Please describe it in more detail.
3) Theme Options > Footer > Footer styling > Background Color
Do not forget to enable the Elementor for static blocks and products > https://prnt.sc/vizq7a
