Help with W-One ladder relay attenuator remote control

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Joined 2018
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I have one of these resistor ladder relay stepped attenuators, Patrick uses them in his own implementation in the F5 preamp.

Seller I used.

I just found this on AliExpress:
£56.81 | Hiend Remote Volume Potentiometer 2X 50K Stereo With Dale Resistors (B7-2)
https://a.aliexpress.com/_EzOLzhU


Some better pictures on the F5 preamp thread

Post in thread 'The F5 Preamp 2024' https://www.diyaudio.com/community/threads/the-f5-preamp-2024.419289/post-7830825

I'm struggling with the remote not working (from new,). As delivered I noticed there wasn't the 3 pin cable or IR receiver delivered. Communication with the seller on AliExpress assured me that the new display board has the IR on the display board. But it wasn't working.
Remote flashes red when I press the buttons. Seems the same remote as seen in Fran's hands on the F5pre video.

I've tried a different IR receiver
Screenshot_2025-05-22-07-28-40-39_260528048de7f2f358f0056f785be619.jpg
And used a 3 way ribbon to connect to the 3 way connector on the W1 board. The led on this KY-022 board flashes as I press the buttons on the remote, so it is getting the signal, but still no joy.

The seller has recommended I try a new LED in the original position on the display board which I am waiting to come from China. I was told it is LF0038M but I can only find references to it on AliExpress so that's where it's coming from.

Not certain it is going to help. Any other way to check all this. The remote control is a bit of a deal breaker as I want to put my streamer into 100% volume output mode and not use the digital volume control in that .

A few more pics I took and sent to the seller
IMG20250512063906.jpg
IMG20250512063913.jpg

IMG20250512063927.jpg
IMG20250517101128.jpg