Activation lock show 1*****@1*****.com after just disconnected from my icloud and erase all and reset settings

It appears that the iPad is still under activation lock to the original owner. Only they can unlock it for you from their iCloud account. You will need to contact them for assistance.

ASC - Late 2012 Mac mini, macOS 10.14.6; Watch, series 3 cellular, watchOS 5.3; iPad Air 2 & iPhone 8+, iOS 12.4; TV 4th Gen, tvOS 12.4;  HomePods, audioOS 12.4 and Airport Express w/ Airplay 2

You need to use the Apple ID and password that was originally used to set up the iPad. Did you previously use another Apple ID?

If this is a used device, you will need to contact the previous owner to have them log out of iCloud or go to iCloud.com/Find My Phone and erase the device, then remove it from their account. If you can’t do that, the device is useless. Apple will not unlock it unless you have a copy of the original purchase receipt with the serial number on it.

Activation Lock - Turn off Find My iPhone 

If necessary, if you are the original owner, take the device, the original purchase receipt with the serial number, and a photo ID to the nearest Apple Store.

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or contact Apple ID Support. They will need to see the original purchase receipt/paperwork also.

Apple ID Support

Apple ID Support (2) 

Apple Support by e-mail or chat         Select your device, Battery, Power and Charging, then Power adapter not working to get a chat option. 

Apple Support using Twitter

Or fill out and submit this form.

It isn't a problem with Apple. The Activation Lock is an anti-theft mechanism. If the previous owner signed out of iCloud and didn't turn Find My Phone off, after you erase it, it is set to the old Find My Phone. You will need to contact the previous owner to have them log out of iCloud or go to iCloud.com/Find My Phone and erase the device, then remove it from their account. If you can’t do that, the device is useless. Apple will not unlock it unless you have a copy of the original purchase receipt with the serial number on it.

Activation Lock - Turn off Find My iPhone 

 you will need to contact the previous owner to have them log out of iCloud or go to iCloud.com/Find My Phone and erase the device, then remove it from their account. If you can’t do that, the device is useless. 

Activation Lock - Turn off Find My iPhone 

I'm not sure how you were able to set it up after you got it used, but it appears that erasing it and taking it back to the original settings awakened the activation lock to the original owner.

No amount of wondering how it happened will change what you need to be able to use the iPad from this point forward.

Is this a used iPad? Did you use another Apple ID when you set up the iPad?

Have you tried going to iCloud.com/Find My Phone using a computer browser to see if you can access the iPad since you erased it?

I have a ipad mini 2 and don't know the person activation lock apple id or ipad