Add this CSS to your website to move the web chat window to the left.
.rbr-outer {
right: auto !important;
left: 50px !important;
}
.rbr-inner .rbr-header .rbr-right {
margin-right: 0 !important;
text-align: left !important;
}
.rbr-inner .rbr-header .rbr-dimissable {
top: -30px !important;
right: 60px !important;
}
.rbr-inner .rbr-header .rbr-dimissable .rbr-arrow {
right: auto !important;
left: 25px !important;
}