Generally this means that the Chrome extension is either not installed or not enabled. Navigate to the URL below.
You should see an entry for "Pega Robotic Automation for Browsers". It should be enabled. If not, you'll need to install it. This can be done from the initial installer by selecting the option to install the extension, or if you have already elected not to install it but now need it, you can install it from the command line. OpenSpan.WebExtensionInstaller.exe is located in the installation directory.
@NickM591 I would suspect that your extension is not properly registered either. Did you install the Edge extension with Studio? Edge also has the option of running sites in Compatibility-mode. If you have an older version on 19.1 (CM support was added in 19.1.86; the latest version currently available), then you would not be able to interrogate any sites using CM in Edge. You can tell that by the IE icon in the address bar. If that is the case, you'll need to use 19.1.86 at least. You can install and register the extension in Edge with the following command;