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.
We have R/3 with SAP_Basis 620 and SAP_appl 470 versions and we like to use Proxies. Any limitations, issues as its not ECC ?. I do see PI add_in to R/3 and can issue commands like Sproxy, sxmb_adm etc..