(Re-)Importing Your Account on the Web
The polkadot.js extension may have deactivated in-browser storage by default
In this case you have to go into the settings tab in the top bar and change "in-browser account creation" to allow in the account settings section to be able to import your account.
Once your words have been safely backed up, go to the Accounts page of the nodleprotocol.io (Nodle Portal) https://nodleprotocol.io/#/accounts
Go on the Web UI and click Add Account
Give the account a name, then paste your 12 words under mnemonic seed. (Double-check the spelling is correct, and that there aren't any extra spaces). Finally create a password (We recommend using a long, randomly generated password stored in a password manager). Don't Click "Next" just yet!
Open the Advanced Options at the bottom, and select the Edwards curve. Nodle uses slightly different cryptographic scheme than the standard Polkadot.
Now Click Next, and Save.