Indeed. I found out when I had a typo in my email address and it still allowed me to log in. It behaved oddly though. I forget what the exact symptoms were though.
Have spoke to my contact at Slitherine, he has passed our concerns on to the tournament staff that run PBEM++. Thats about all I can do - if I hear anything I will let you guys know.
I just surrendered to @Cargol
I had three light AA guns hoping their rate of fire would panic any tanks Cargol would bring, this did not work.
They were knocked out, and his armour had me over a barrel, well shooting fish in a barrel more like.