From 8K, it looks like they are not authors of 2020 filings even though they qualified there is no disagreement after the 2019 filing until the day they resigned.
"For the past three fiscal years and subsequent interim periods though the date of resignation, there have been no disagreements with Friedman on any matter of accounting principles or practices, financial statement disclosure, or auditing scope or procedure, which disagreement, if not resolved to the satisfaction of Friedman., would have caused them to make reference thereto in their report on the financial statements."
