You might still be seeing the effects of that incredibly soggy sphagnum moss mess it was planted in. Did you pull the re-potted plant up? Or did it fall out of the pot? I also suspect you potted in dry bark. That's okay if you immediately soak the newly planted orchid in water to hydrate the bark.
The orchid bark is okay but the pot is too big - the pots they came out of were just about the right size. I teach potting seminars for our local orchid society chapter. I always recommend plastic pots for beginners. Clear plastic pots are better yet because you can see what is happening. You can always place the plastic pot inside a decorative pot for display.
Start by hydrating the bark - put what you need in a ziplock bag, fill with water, seal and let the bark soak for awhile. While the bark soaks, gently pull off all the moss and trim any rotten/dead roots. Balance the orchid with one hand at the level you want the plant to sit, then add bark with the other hand. Press the bark down with your fingers as you go. When you can pick up the orchid by its 'ears' - the pot with bark should should not fall off the roots. If it does, start again.
A couple tips: Sterilize you scissors with alcohol before you start. Sprinkle cut roots with cinnamon before you plant.
