Yahoo Groups- why is my correct email address disabled for some groups?

I recently joined three or four groups and have gotten email from none of them. I went to My Groups and looked at each. Apparently, instead of subscribing them to my primary email, they subscribed them to a Yahoo address with my Yahoo screen name. When I go to Edit or Email Preferences or anything similar, it says that my actual email address, the one listed as primary, is disabled for that Group. I have no idea why. The Yahoo address is also apparently bouncing, which I don’t care about as I have never looked at it.
The Groups I was previously subscribed to are working fine. Only in the new ones is the address disabled.
There is no bounce history for the real address.
I tried unsubscribing then resubscribing and it still says disabled.
Help? There’s info on these Groups that I need now!
Thanks,
HennaDancer