Not able to change Apple ID's primary email address (that was previously used for another Apple ID)
I'm not able to change Apple ID's primary email address from (let's say) yyy@gmail.com to xxx@gmail.com, but I can change it to abc@gmail.com with no problems at all.
Now, everytime I try to change it this error occures:
"Your new Apple ID cannot be the same as your notification email address. Choose a different email address."
As a matter of fact, xxx@gmail.com had been used for another Apple ID, that was deleted about a month ago.
That leads me to my question:
Can I even reuse xxx@gmail.com for other Apple Id now? If so, what can be a problem in my case?
Regards