Open up your Beta wallet - https://beta.wavesplatform.com
Click on Restore account on the main page
You will be forwarded to the following page.
Copy and paste or type your SEED into the blank text field.
The Waves wallet will automatically generate the corresponding address right below the text field.
If you entered the correct SEED, it will display your Waves address.
Then, click on Continue. Set a password for encryption of the SEED.
To finish the process, click on Sign in
At the final stage, read carefully the conditions and if you are agree put the checkboxes.
Click on Confirm and Begin.
If you have done all of the above, you are forwarded to the user interface
For more information about seed phrase, please see the next article - What is a SEED phrase of your account
Customer support service by UserEcho