From version 2+ onward, authentication has been replaced with OAuth. You’d want to Follow this guide.
- Login to your Wave Account.
- Go to this URL: https://developer.waveapps.com/hc/en-us/articles/360019762711-Manage-Applications.
- Click on Create an Application button
![](https://docs.wpvenus.com/wp-content/uploads/2020/02/image-2-1024x480.png)
4. Give it a Name. Description and Redirect URI can be left as they are. Select Terms and Conditions and click on the Create your Application button.
![](https://docs.wpvenus.com/wp-content/uploads/2020/02/image-3.png)
5. Click on the name of Application you just created, then click on Create Token button.
![](https://docs.wpvenus.com/wp-content/uploads/2020/02/image-4.png)
6. You should get the API key.
![](https://docs.wpvenus.com/wp-content/uploads/2020/02/image-5.png)