Chosen Solution

Good day I’ve got a 2019 16” MacBook Pro running with Catalina (10.15.7) and I can’t make my external monitor work (Dell E2210) I’m using USB-C Hub adapter with VGA/HDMI/4 USB ports. After reset the PRAM & SMC and updating the Security & Privacy/Accessibility (added DisplayLink Manager) it worked then an error pop-up then the external monitor lost it’s connection. Now the external monitor is not working anymore.Before buying a new video adapter i like to check if there is a fix. Thank you in advance.

Time to try a new Hub unit, sorry