Trying to enable homing cycle with GRBL

I’ve got a Sculpfun S30 Pro Max hobby laser cutter, and I can’t seem to get homing to work correctly in Lightburn with GRBL. The laser cutter has x and y limit switches. I can move each axis though the move tab just fine, but the homing button results in the infamous “error:5 Homing cycle is not enabled in your Grbl settings” log message.

I’ve looked thought a bunch of doccumentation including forums on this site and the lengthy GRBL github configuration page, without success. “Auto home laser on startup” is dissabled in the devices menu, and if i enable it I get the same error message. Let me know if you need any more information about my situation or setup.

Thanks, Sam