On your Thinka go to the Settings -> Amazon Alexa and enable Alexa.
First click the enable button below and wait until the indicator above turns green and shows “enabled”.

This means Thinka has successfully established a secure connection to Amazon via the Thinka Cloud.

You do not need an Amazon Echo unless you want to use voice control.
Thinka devices can also be controlled directly from the Alexa app or through Alexa Routines without an Echo device.
Next, click the “PAIR” button and copy the generated token.

Open Alexa app. Then Go to Settings -> Skills& Games -> Search Thinka in the skills -> Click ENABLE TO USE button

The page shown in the image below will appear. Enter the pairing token you received from the Thinka UI and click ALLOW button.

Once the skill is linked using the token, you will see the accessories in the app.