Hi,
For the Login Screen-
Please Goto
wp-admin > wplms > miscellaneous > Custom CSS for WP Login Screen
Paste these lines and save the changes.
body.login div#login h1 a{ background-size: 200px 100px !important;}
width: 200px, height: 100px (change as you want).
For the Footer Image-
Please follow these steps and act accordingly:
Goto
wp-admin > Appearance > Customize > Custom CSS > and PASTE the code wisely.
div#footerbottom div.col-md-3{display: inline-grid;font-size: 10px;}
div#footerbottom h2#footerlogo a>img {max-width: 210px;height: auto;}
Changes will we like this:
http://prntscr.com/l7hcr3
Hope this helps.