If you wish to connect to the Kraken login account then you need to sign in using the current username and password. Alternatively, you can connect your account to the app using the key. There are set instructions to generate the key and this will help you to download and to trade with  ease. https://sites.google.com/bitlogins.com/krakenlogin/home
https://sites.google.com/bitlogins.com/krakenlogin/blog/kraken-too-many-invalid-login
https://sites.google.com/bitlogins.com/krakenlogin/blog/kraken-staking
https://sites.google.com/bitlogins.com/krakenlogin/kraken-wallet