Hi Eric,
No problems here with iMac 27" Retina 5K 2019/macOS Monterey 12.6/XP11.55.
Try the usual - uninstall Simlink from your machine, restart machine, download and install latest Simlink as per How to install SIMLINK on X PLANE 11 for MAC - #7 by Vimarleo
Restart machine. Run X-Plane 11. Does Simlink start OK?
Cheers
Ian