Hello,
You need to use the WP Font Awesome Plugin to resolve the issue regarding the icons.
Download the Plugin from https://wordpress.org/plugins/wp-font-awesome/ and install and activate it.
Please upload 235 x 235px size of images in services section.
If you want we can review the issue regarding project section, make a user for us assign administrator role and send us the username and password at [email protected].
Many Thanks