External Display with Thunderbolt connection will not work

I am praying someone can please help me. I am in so far over my head and need help. I installed the latest OpenCore patch to try and get airplay activated on my Late 2015 Intel iMac. That part worked. But now for some reason the iMac's external displays will not be detected. I tried running the Post Install Root Patch through the app but it says they are all installed. I've restarted the machine and cleared the NRAM, I've tried plugging and unplugging the displays in every configuration at startup, before start up and after. Detect Displays will not show up. I am running the last supported version of Monterey, I wasn't interested in updating to Sonoma or any of that, just wanted airplay. These displays have worked for years with this iMac, this is the only change. Can anyone out there please point me anywhere I can get help on how to get these displays back or how to remove OpenCore and just get my Mac back to how it was before the install. Even if there is a paid service, I need to get this back operational.

submitted by /u/KathCobb
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