As detailed in the January 24, 2022 announcement, PO.DAAC has completed the transition of the Phase 1 datasets.
Starting today, January 31, 2022 at 20:00 UTC, PO.DAAC has removed PO.DAAC Drive access to the Phase 1 datasets. They will be available ONLY through our Earthdata Cloud end-points.

Earthdata Cloud access end-points for the above listed datasets can be found on the respective dataset landing pages under Data Access tab.

An additional CLOUD DATASETS listing page for cloud enabled datasets is available on the PO.DAAC Web Portal, which offers more tool/service integration

See the January 24, 2022 Announcement page for more details.