A few things to look at:
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Did you run a Lightburn focus test to verify the focus distance? My focus distance was somewhat off of the “spec” for my NEJE laser module.
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The board you are using has a test button. Author a one second burn (no movement). Next hold the test button down for one second. Compare the depth of the burn. This will tell you if there is a PWM issue.
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With the laser disconnected, examine your lens. At one point, I cracked my lens, and the power went way down.
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If you changed authoring in any way, look at the g-code in a text editor (save it to a file) to make sure your PWM values are in the range for your machine. I assume Ortur is a GRBL machine, so I believe they should be in the range of 0 to 1000.
While not identical, I put a NEJE40640 laser on David’s $79 laser engraver, and it worked flawlessly. It is a GRBL machine. I did connect it directly (not using the control board), and I ran a bigger gauge wire for power (original was around 26 gauge).