The question marks are due to the below CSS.
IN: templates/rt_alerion/css-compiled/master-096c96128f6c5b5d4590a67a40d29668.css
Code:
.component-content .login + div ul li a:before, #login-form a:before {
font-family: FontAwesome;
content: "f059";
margin-right: 4px;
}
The "content" specifically is adding the question mark.