Hello mutlubil, and welcome to our community!
That is correct, FDSNWS archive data access (through ObsPy or our FDSNWS service) is not yet available and is being actively worked on so that we can restore this functionality. As of now, we have restored live-data streaming capabilities across StationView and DataView, together with instrument response download. Anything missing continues to be worked on and will become available as soon as possible.
You can follow all updates and our latest status here on the forum: Live Data Issues
We apologize for the disruption and any inconvenience this outage may have caused. Thank you for your understanding.