Is there any way to re-authorize my Adobe ID?

I made a mistake and de-authorized the ID on my computer, thinking I could reactivate it (there was no warning that this was a permanent change). Unlike previous editions, this version displayed an error message to the effect of "once you have used an Adobe ID on a device, you may not use it again." Is there any way to get it back? And if not, is there any way to contact Adobe directly about this? Or appeal for an exception to the policy? I'm not trying to install more copies than I should. I'm just locked out of my account and trying to find a way back in so I can transfer the library e-books I need to put on other devices. Any help much appreciated. Thanks!