Offline wallet, BC Vault.
Yes, that’s what we thought as well, but when keying it into Anchor, it wouldn’t recognize it. It is way longer than 51 characters and doesn’t begin with 5.
Response to below reply, as we’ve reached our max and have to wait 21 hours:
Yes, probably so, but keep running into an error when attempting to buy resources, no matter how many EOS we attempt to stake.