Fishtail palm came from nursery and had to be dug up. This palm is about 10' tall. The nursery kept the tree for a week before I moved it to the new location. It has been about three days since I planted it. It is in the ground with about two inches of the roots showing above the ground. I have a moat around the roots. Water it twice a day filling up the moat and letting it soak in.
This can most likely be attributed to transplant shock, which is common in new plantings. This article will help: https://www.gardeningknowhow.com/plant-problems/environmental/learn-how-to-avoid-and-repair-transplant-shock-in-plants.htm
Also, you say you water daily and have a moat-like bowl around the tree. This can actually cause water to sit in the area resulting in root rot or other fungal problems. I would first suggest that you mound some soil up around the tree so the water isn't just pooling up around it.
How to divide and pot a fishtail palm?
This link should help: https://www.gardeningknowhow.com/houseplants/fishtail-palm/fishtail-palm-care.htm
How long should it take to mist a 15 foot fishtail palm indoors?
Misting should take place several times a day, a good misting bottle can be purchased at most garden centers and this take should not take more then a few minutes at a time.
Do you have pictures of a pup suitable for propagating? Yours is the best site I have found on palms☺
I don't have an image but this article will help you.