Scaphosepalum swertifolium roots
 

I just purchased a S. swertifolium. The roots look like the image in the link below. They are basically non existant from what I can tell, but I am still new to orchids and newer to mini's.

Will it be okay if wrapped in sphagnum and placed in terrarium (80-95% humidity) and placed in correct light?

Should I contact the seller?

S. swertifolium - Google Photos

I would contact the seller for suggestions also.

I'm not familiar with that plant, but if I received a plant I DO know and it was in that condition I would demand a refund from the seller.

The near lack of roots wouldn't surprise me as a bare root recent import. If it wasn't a recent import I'd be unhappy. Either way I'd contact the seller and see what they do. Yes, with sphagnum, high humidity and correct light the plant will probably recover quite nicely if there is no ongoing rot problem.

If you can put a little air flow in their too, it would be better.