If you aren't able to successfully connect Woocommerce to your APIANT account, review the following:
1. Make sure Legacy API is enabled in your Woocommerce Advanced settings
2. Make sure the User you choose when creating your API key has admin credentials and the Permissions are set to Read/Write
3. Activate permalinks in your Wordpress settings. That's any option besides "Plain"
4. Insure your domain has SSL https://yourdomain.com
If you are still having issues connecting your Woocommerce to your APIANT account, just let us know by starting a chat and we'll assist you.