Hey Joel, I hope you are doing well. It is likely that you already reviewed this, but definitely take a look at this KB article linked below.
Why do I get error "The browser extension was not detected" when attempting to launch a browser based (Chrome, Firefox or Edge Chromium) application?A couple things to check primarily would be to make sure Edge Startup Boost is disabled, as well as making sure that only the 7.1 Browser Extension is installed, and the old browser extension is not also installed.
If this is working in application modeller and not elsewhere, one possible workaround would be to open the browser with the Utility - Environment VBO and then attach to it afterwards. This might help you to bypass the issues you are seeing.
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Jacob Clary
Customer Support Engineer
Blue Prism
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Jacob Clary
Senior Product Support Engineer
Blue Prism