Help! MB Pro 2019 BM driver blockage 14.1

HELP! Neither of my two laptops can recognize any BM connection now since 14.1. I’m using BM video capture cards in a Node Pro kicking Thunderbolt out to my MacBook Pro computer. Done it tons of times in the past. Usually when Wirecast doesn’t recognize my cameras I go the Desktop Video Setup to see if IT recognizes. If not I go and make sure I’ve got the latest Desktop Video driver. I DID update today with 14.1. But still my MBP can’t recognize, although plugging that same cable into a Dell PC laptop (with 14.1) DID see the cameras. Some kind of blockage / system extension thing is happening. Upon installing the latest driver I DID click “Allow” under Privacy & Security Settings but still no go. PLEASE any suggestions? I have two days of webcasting I’m supposed to be doing begin tomorrow.