We recently purchased the Pro version (Juicebox-Pro 1.3.1) after evaluating the Lite version (Juicebox-Lite 1.3.0)

During our evaluation everything worked fine across all browsers / devices etc.

Now that we have the Pro version, the only thing we have changed is the reference to the Pro JS file.
The icons now do not appear in any version of Internet Explorer, a square appears instead.
If I switch back to the Lite version of the JS file , the icons appear as expected.

The CSS that displays these icons looks like this:
.jb-navigation .jbn-left-button:before, .jb-flag-large-screen-mode .jb-navigation .jbn-left-button:before
{
    content: "\e000";
}

Please advise a solution to this issue.

Can we get our hands on previous Pro version (Juicebox-Pro 1.3.0) to see if this rectifies the problem ?

Thanks,

Ray