Try to return it, that is step one.
My personal go to for putting roots on a Paph is to use a fairly small pot. Maybe a 4” pot in this case. With a non existent root system, no need to go larger. I use a mix of seedling bark, perlite and charcoal. I pot it up with pieces of clay shards in the bottom of the pot and I fill half the depth of the pot with media. No roots, not need to go deeper with the media.
I keep them in lower light, 800-1,000 foot candles.
I don’t really water, again, no roots to absorb it. I stake the plant to steady it and I mist the plant every other day. I get the top of the media moist. Depending upon variety, I have seen new roots as early as 4 weeks, typically 80% of these plants show roots at 6 weeks, almost 100% at 8 weeks. I have had good luck doing this.
When roots appear, don’t be too anxious to pot it up. Let it really recover!
Good luck