No. I have not uploaded any DNA from any other DNA testing firm. I bought an autosomal DNA Kit from 23andMe and that is the only DNA kit that I have ever associated with 23andMe.
I ordered my 23andMe Kit and joined 23andMe on 12-30-2022. My 23andMe account worked just fine in the beginning and I manually built a tree, and I could see my DNA matches.
Then, a few weeks ago, I logged onto my account on 23andMe, and I could not see my tree or my DNA matches. I knew something was wrong, but I figured these features were not working because of the data breach at 23andMe, or some other problem.
Apparently, I figure that at some time very recently, a demo profile was somehow created by 23andMe and added to my existing account.
It seems odd to me that a new empty demo profile could have been recently created and attached to my existing fully functioning account. I have only used one password at 23andMe. Restated: My account and my e-mail address have only had one original 23andMe password that was then updated to a 12-digit password following the data breach notification.
Thank you for your interest in this problem.
Best. Richard J, Amherst County, Virginia, USA