Shopify has upgraded their API's and requires all integrated apps to update. Please follow these steps to update your T-HUB

Open T-HUB application and click on Application updates

Click on default prompts to download and apply the update. Restart T-HUB.

Alternatively, you can download and run the update from here

After the update, verify that the application version has been updated to 10.593

In T-HUB, click on Web Stores > My Web Stores

Select your Shopify store and click on Edit Store

Step 1 - click on Signin. Follow prompts to login to Shopify as admin user and confirm to update T-HUB Online application.

Step 2 - Click on Get Authentication Token. This completes the update.

Click on Update and Close