Board closed by "Deleted account" - How is it possible ?

[Bernard Claviere -Croisade pour la santé-]

Hi there.
I am told one of my boards - a very important one - has been closed.
But it has been closed by a "deleted account"  !!! 
This is the mail I got from Trello : 

Voici ce que vous avez manqué...

[compte supprimé] a fermé le tableau Dayati

Translated : Here is what you missed...

[deleted account] has closed the Dayati Board

I am the creator of that board and basically the only one using it.
I deleted that member myself from all my boards (she is into other ventures) and I do not see how a non-existing member could possibly have closed the board...

Total mystery.
I desperately need help here... 
Many thanks to you all.  

[Bernard Claviere -Croisade pour la santé-]

Thanks Ludo. 

... Sorry, I thought THIS was Treelo Helpdesk... 

?? :)

[Ludo]

Hi,

Contact Helpdesk Trello to restore your board if it's possible.