Kick From Server When I Try To Join

I clicked no for the resource pack (I already have a custom one) and now I can't join the server. It doesn't give me another opportunity to press yes since I didn't know about it's requirement earlier. So if you could provide me with a download link for the pack it would be great.
And why do we need a custom pack anyway?

 

You need the Custom resource pack.
You. Need. It.
Use it and you'll find out why.

 

I believe there's some way to reenable it.

You need it because of Wynncraft's custom textures; some items are planks, etc without the pack.

 

I never downloaded it, that's the problem.

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I tried to copy it from a friend's computer to no avail.

 

EDIT: Never mind, I found the 'change resource pack' details in the server 'edit' button thing.