20-inch Apple Cinema Display screen flashing on and off when connected via adaptor to Mac Pro 2019

I have a multi-screen setup for my new mac pro, moving over from my mac pro-2013. Two displays work perfectly and I finally got my adaptor for the 20-inch (metal) apple cinema display, DVI to USB-C. I plugged it in and the screen is registering and it displays beautifully, but then the screen flashes on and off. The screen is visible for 2 seconds then its black for 7 seconds in a loop. Sometimes this causes my main monitor connected via HDMI to also flicker for a second. The display options show the monitor and all the display settings. Ive tried getting dust out of the connector and restarting the machine with no luck. Do I need a different connector or is the display simply not compatible with the new Mac Pro?