Cute horse, still very green.
If he were mine, I don't think I'd be showing him at this level yet, I might keep him home and really confirm the basics, perhaps do local schooling shows.
He appears to have good, natural, tidy form over fences and plenty of scope. However, he was running/pulling to the fences and never found a balanced, rhythimic canter, which is part of the reason he never found consistent distances. I would not jump a course on him without a readily available simple change or a real flying change. Needs much more work on that balanced, rhymthic canter and gymnastics.
The dressage test shows a horse that's being pulled down into a frame, rather than taught to correctly move up into the bridle, and he appears rapid and rushed throughout the test. He needs to be ridden with lots of big half halts and just work on maintaining a steady pace.
He seems to be a cute willing guy with some talent, I would hate to see him pushed too far too fast.
I am not terribly impressed with your trainer.