Hi Jane, I am sorry to hear your huge compacta is having problem. I don't think it needed to re pot if there were dirt left when you transplanted. Maybe getting too much water, I would put it back in original container if it was mine and keep the roots drier for awhile but misting the leaves.
Good luck!

Jan

Jane...personally, I would water the plant heavily with a solution of BATS...not only would this rid your plant of any pests, it contains fertilizer that would be beneficial to your plant. As David has stated in previous posts, H. compacta needs more water than people generally suggest. You may not see any evidence of mealies, but they could be attacking the roots...so, to be on the safe side, I'd water it heavily with the BATS, and do so immediately, then do not water for a full 10 days. Since David's advice to water more heavily, my compacta has become a "show piece". Wishing you good fortune with this lovely hoya!! Fondly, Patrick