I tried to reset my account with the support tool on the webpage. But I got the following message:

"Sorry, as a security precaution, your player is too high of level to use this feature."

I...

Thank you everyone for kind explanations.
I think this can be a good starting point. :o

Thanks for your reply, Nikola. :)

One more question.
If minimum should be 40 cards, what about "maximum"?
I think "as many as possible" is not a good idea;;

I'm new to Shadow Era, and I really like it.
As a new player, I have a question about the deck size.

I think that having too many cards in a deck is not a good idea.
That will reduce a...