About the docking, permission denied,
I've been playing for a month, and never seen so many small ships, at most small orbitals.
The turn around at the moment for landing at a station is very slow, atm. myself included. You have to look at bulletin boards, ship configs, repairs. generally get used to menus.
I am guilty also of just taking my time in a small station and forgetting the queue outside.
I kept trying to request landing,but eventually got in with 10 mins to spare on a timed mission.
This will get better as busy starting system, gets diluted by pilots venturing away from the busy zone.
Some new players, request a docking space with a number assigned, that is on the opposite side of the station and not noticed.
So I reducing the number of available slots. also not noticing the landing direction (orange number above the landing pad orientation)
There may have been a bug slowing the release of free docking spaces, but it was frustrating queuing with the urgency of my delivery,
but that was great to add to my suspense.