2.4G led dimming power supply. Model: SN-RF72/108CW

I bought this device 2. 4G led dimming, Model: SN-RF72/108CW about 4 Months ago, I only just put it up in my house 2 Weeks ago and it stopped working within 2 hours of putting it up.
Can someone please tell me what to do?. The Electrician that put it up doesn’t know what to do.
He told me to buy the part. What do I do.
Can someone please assist?.

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the picture above is same as mine, but it’s not working.

Hi Emita, I’m having the same issue. Have you managed to solve the problem? I can’t even find that part online! Did you manage to buy a replacement? Thanks!