Don't worry about the airlock... very unreliable indicator of fermentation. Is there any condensation on the lid or any appearance of foam starting to form? These would indicate fermentation was starting up. Another test would be to take a hydrometer sample and see if there has been any change from the OG.
If you don't see any of these, I would give it a bit longer and see if any of those signs appear (within another 12 hours).
Given you are using a fermentation fridge - I assume this means you have some form of temp control. If so, lower it somewhere down to around 18-20 degrees, will result in a cleaner ferment.
Well done on the 1st AG - looks like it has gone pretty smoothly and the pics look great!!
Cheers,
Brendo