Version 1.0 of the plugin was released with compatibility for 8.2.7, 9.0, and 9.1. The SXA editor in these versions does not support using the plugin.
SXA can be installed in the same instance, but the editor will not integrate with the plugin until a later release.
Content Hub Configuration
To allow a Sitecore instance to access content hub, you must add a CORS configuration entry with your Sitecore CM instance URL.
Navigate to: Manage -> Settings -> PortalConfiguration ->CORSConfiguration or go to URL> http://CONTENT_HUB_URL/en-us/admin/settingmanagement?setting=CORSConfiguration&settingId=8748
Enter your CM ...