I would if i can find that wallet, has been a while since. Will go back and try to sign with that address
I have a little doubt of the ownership of this account. Because:
1. Recently woke up and changed sign address
2. Sign format also changed
In this case can you sign with any btc wallet or any eth wallet which you have used earliar on this forum? Please make sure the post should be unedited or quoted.
It wouldn't be impossible for someone to lose the wallet he had someday staked here though.