Hello,
Navigate to Appearance > Widgets > Edit social icons widgets and change the icons size:
Screenshot for clarification:
https://ibb.co/sP98bnp
For the footer image. Please try using the below Custom CSS code and paste it to Dashboard >> Theme Settings >> Custom CSS >> Global CSS section:
img.wp-image-19769 {
max-width: 100px;
height: 50px !important;
}
Alternately, You can create a footer using HTML Blocks and edit the footer in the elementor:
https://xtemos.com/docs-topic/set-up-footer/
Best Regards.