Hi Natalie_Cary ,
Welcome to the forums!
Thanks for reaching out to us!
Unfortunately, we might not support Internet Explorer anymore.
Here's what @Jasper said in the post "Not Working on Old Browsers?":
About IE (Internet Explorer)
We're not sure if we want to support Internet Explorer as it's an old browser that does not support many modern scripting languages. Also, Microsofts employees are advicing companies to not use the browser anymore (source: Microsoft tech community ). But we may look for an work around for this, but to be honest, I am not sure if that is worth it. Internet Explorer isn't that big anymore as it used to be in the past.
Regarding Edge, Buttonizer should still work for Edge browsers.
Could you perhaps check if your edge is using the lastest version?