We were subscribed to charter, where we had our parents e-mail too, so now I can't get to that. It was also the e-mail we used to buy blockland.
That happened to me.
This is what I did.
I got a new E-mail adress, and sent support@blockland.us ( I think )an E-mail.
It said that I deleted my old E-mail and I can't find my keys.
You need to tell them your old E-mail adress, and they e-mail
your keys back to you. It worked for me, hopefully it will work for you.