If so, you need SAP Universal ID. In a few months, SAP Universal ID will be the only option to login to SAP Community. Without it, you will lose your content and badges. If you have multiple accounts, use the Consolidation Tool to merge your content.
Hi! Is possible to have common component for may pages and add restrictions just for one page. On this one particular page only one user group should see this component.
It shouldn't affected other pages with the same component.