So at one point I made an account. I guess I didn't "backup" the web-cache because I'd never heard of backing up a cache ever. I thought it would back it up so I didn't rely on the web-service, when it actually backs up my web-cache.
I think I understand it now. Your username + password is not sufficient if you clear the web-cache? Is that true?
Regardless I decided to go with the brainkey. So after digging the pictures of the brainkey off my phone I try to restore via brainkey. In both chrome and firefox, windows and linux, I get "key.normalize_brain_key is not a function app.js 102" That is firefox on windows.
On Chrome I get
vendors.js:2 Uncaught TypeError: key.normalize_brain_key is not a function
It should be real easy to replicate this bug, just go to create account and keep clicking through until you get to the brainkey option at the bottom.