I could confirm the footer content issue on my test site which occurs when we use Footer Parallax therefore notified the theme developer about this so that it will be fixed.

The issue will be fixed ASAP.

In the meanwhile you can try resolving the issue by adding the following CSS code in the Custom CSS code option of your theme on the below path.

Admin Area -> Appearance -> Theme Settings -> Custom Code -> CSS Code

@media (min-width: 851px) {
.sh-footer-paralalx-init .sh-footer {
    position: static;
}
.sh-footer-paralalx-init .content-container {
    margin-bottom: 0 !important;
}
}

I could not confirm Hero image issue so please tell me how do you want it to display?