found this today. maybe explains why you couldn't buy BRGO
"The chill is not on the buying or selling of shares, it is on how the company issues convertibles. DTCC wants BRGO to issue certificates instead of the electronic shares they were issuing. The only companies that won't allow buying here are TDA and I believe Vanguard. It is not affecting anyone else.
Per CEO Berge Abajian, they have a 5/6 deadline to submit a legal advisement to DTCC to show their compliance and at that point the chill should be lifted. Very minor situation."