Are all old accounts gone?

Hello. After a few years, I downloaded wow again. I used to play here back in the molten days, and I remember when it changed to warmane. I do remember I recovered my account at one time, but now it seems I can't login to my old account. Are those gone? Were there a wipe or something? Had some donor items :(
Also, can i skip the queue if i donate? Or that thing doesnt work anymore

if you still remeber the account name of your old account, you can send an email to [email protected] for support.
They might help you to recover it.

Yes, by donating your account gain "premium" status.
All "premium" accounts skip queue

I do remember it. I just sent an email, I hope they can help me.