Can`t work in Mac OS 10.9

I downgrade my Mac OS, cause is an old macbook and is slowly, but when i installed lightburn can’t open the app, somebody know which is the most Mac OS old version that work with lightburn

I had the same issue and this is what worked for me.

Go to Finder
Type in Lightburn
Hold the CONTROL button and click to Open.

This should give the app an “exception” to open.

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