Hey Stephanie, I hope you are doing well today.
Like Neeraj mentioned, there is not official compatibility/support for for Edge on Blue Prism version 6.6. Edge did not become officially supported until Blue Prism version 6.8. On top of that, newer Blue Prism versions fix a lot of compatibility issues with all browsers, 6.10.4 being an example of a better option for Browser compatibility. It is definitely very possible that the Edge version plays an impact in how it interacts with Blue Prism. If it is possible, I do think an upgrade to one of the 6.10 versions would be the best for browser compatibility.
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Jacob Clary
Customer Support Engineer
Blue Prism
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Jacob Clary
Senior Product Support Engineer
Blue Prism