Does a front door have to be sanded all the way down to the wood?

I don’t know if the old paint was oil based or latex, so I sanded it and used Zinnser 123 latex based, I let it dry for almost 24 hrs before putting finish paint on it. Problem seems to be is the door seems tacky still and sticks to the

I have 4.5 walls that have paneling on them. Do I need to fill the creases or can I paint right over it? Also what type of interior paint do I use for this?

I have a large table that was finished with fiberglass resin. It has cracked at the point where the two book-matched pieces join and is scratched. What should I do to refinish it?

I have a leaded glass fiberglass door, which is showing signs of ware and peeling from the sun. I have sealed the door twice a year to protect it, but it now needs to be refinished. Primarily on the raised panels and lower paned of the doors and side lights,