P: Develop Preset syncing between desktop and mobile

I'm imported presests and I want to use this in mobile. How can i do this?

That's just a straightforward copy and paste job. If you're moving to a new computer, you'll find these instructions helpful: https://www.lightroomqueen.com/how-move-lightroom-to-new-computer/  

But how to do it from LR Classic to a new computer with LR Classic?

I would be nice if Adobe made it possible to sync all presets to the cloud, so a it's possible to use them on computer 2 or at a reinstall without manually copying them, from their folders. 

I've just pushed a quick tutorial live, for Lightroom Classic users who want to sync their presets to the mobile apps. https://www.lightroomqueen.com/sync-presets-profiles-lightroom-classic-mobile/

Ok, so it seems whilst the images were rendering correctly the profiles were not imported.  I manually imported them, from the Adobe/Camera Raw/Settings/ folder.  I thought it was supposed to auto import those.
They are now appearing as expected in the mobile app as well as the LR CC desktop.

Interestingly the image in the profile preview on mobile looks correct but the rendered image does not match.
It is using a colour lut to flip red to blue and blue to red (for a colour IR camera)

Which folder do you find that profile in on the desktop? You'd need to select the same folder on mobile. And don't forget it'll only show up in certain file types, depending on how the profile was created.

If they don't show up, force quit the app and restart, as that seems to be doing the trick for missing profiles.

I can see 1 of my profiles but not ones using colour luts... it seems

Excellent, how do we see the custom profiles in the mobile app.  I can see it is no longer displaying the error/warning about missing profile but I cannot choose one of my custom profiles.