How do I make it so a certain item is required to use DT? I can't seem to find it in the wiki at all and I really want to know.

Please let me know thanks!

If it said anywhere where does it say it says how to not require but not how to enable. That's why I dk how to do it srry.

The wiki gives you a hint how to enable this: https://dragontravel.phiwa.eu/config_messages.html#config
It links to the default configuration file with comments: https://github.com/Phiwa/DragonTravel/blob/master/src/main/resources/config.yml

Sadly, this feature might be broken at the moment since it is still based on item id numbers (e.g. 122 for a dragon_egg) instead of the newer item material names (e.g. "DRAGON_EGG"), so it might simply not work.

This is a known issue, but I have no idea when I will find time to fix this...