For a month of more now, wordpress is getting an attack of fake accounts subscribing to blogs and spamming their comments.
All the fake accounts come from outlook.com e-mail addresses.
Trying to battle this I think I may have deleted some real subscribers that use Microsoft Outlook.
I am very sorry for this. And I do not know of a way to re-list you myself.
I trust that you have found this blog of value enough, to go to the trouble to re-subscribe/follow.