This is the reply I got from FAA on November 16 when I alerted them about the issue:

Thank you for your inquiry.

An FAA tool used in the assessment and verification of ADS-B performance is currently offline. As such, we are currently unable to process any Public ADS-B Performance Report (PAPR) requests. At the present time, we are unable to predict the duration of the outage.

If you have any additional questions, please feel free to ask.

From: do-not-reply@faa.gov <do-not-reply@faa.gov>
Sent: Tuesday, November 16, 2021 11:32 AM
To: 9-AJE-ADSB (FAA) <adsb@faa.gov>; 9-ATO-NECC-OPS (FAA) <9-ATO-NECC-OPS@faa.gov>
Subject: [N-Number/ICAO: N46036] ADS-B Services: Report an Issue: form submission

Date/time of form submission: 2021-11-16T15:32:09-0500