By default the Youtube Google API is using Youtube username. I’ve been testing using your username and it didn’t work.
Just trying using your channel ID and it works. But need little tweak in theme code.
Please follow this step to make the Youtube counter is work :
1. Open ‘wp-content/themes/Curated/includes/widgets/maha-social-subscribe.php’.
2. Go to line 444, find ‘forUsername’, replace with ‘id’.
3. Go to line 452, find ‘user’, replace with ‘channel’.
4. Save the file
5. On Widget Social Subscribe, please use your channel ID, not your channel username. Save.
Let me know if it doesn’t work