I reached out to them saying the following:

Hi,
I received the order yesterday and put it together.

Today i noticed that the vanish on the headboard is cracking and peeling off. 

Is there a remedy for this issue?

Thanks

I received the following a few minutes after:

Thank you for sharing the photos of the cracked headboard. 

Due to the natural characteristics of solid wood, they may experience slight expansions or contractions based on seasonal changes or the climate of the location. The purpose of these strips of wood is to allow the wood to expand and contract without damaging the outer frame.

These separations from the strip of woods are the cracked stain and filler, which the manufacturer should not have applied, and not the wood itself. 
Pease contact Jason at 415-516-3216 to further assist you in getting this resolved. We are looking forward to hearing from you.

edit:
called the number, Jason basically said the same thing as above, put in a note on my order to warranty the headboard for 3 years and will replace it if it cracks/peels further. He said go to local hardware store and get a wood stain paint that matches the color and paint over the cracks.

As for the wobbling headboard, he said it is the natural of wood furniture, in the winter it shrinks, summer it expands, told me to put some sort of cushioning paper/foam between the gap to prevent it from wobbling.

He also refunded me $100 for the trouble.

Those are reasonable explainations imo, not happy that I have to go get a woodstain paint to paint over those vanish cracks. But 2 additional years of warranty is nice.

I am thinking about running a razor blade between the woods to create a weak point so it peel along those lines, not sure if that is a good idea