Warranty registration isn’t a requirement legally anyway with any warranty, plus Jungle will be fine with just receipt or some such evidence of purchase. They’re very good with warranty stuff.
Still though, most shops will have lost the bits and boxes it came with.
Contact Jungle and they’ll probably send you missing bits free, if the shop can’t find them.
What bike is it without grease nipples? Hard tail I assume then?
And grease gun – original was rubbish though I’ve finally got mine working reasonably. The newer toothpaste tube style one seems a bit pathetic and you’re tied into that kind of grease tube. The original you can at least fill from any tub of grease.