I play sky Factory 3 and purchased the tier 3 pack, now I was wondering how I would use the kits I purchased in-game because the commands and help in-game aren't very helpful?
just type /shop and make sure (hover over the emerald) that you are on the credits page, then you should be able to use the credits you've gotten with your donation to buy kits
Donor Kits are not yet enabled on Skyfactory 3, you should have access to most of your other donor perks like the no-afk-kick, but you'll have to wait for one of the admins to add new kits when time permits. Once they are enabled the command to redeem them is simply /kit [kitname] e.g. /kit resource