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.
If a PO has multiple line items then during GR user has to click 'Item Ok' button one by one for every line item. To avoid manual selection by line item is there any mass 'Item OK' flag setting possibe in MIGO.