How check SMS credit or subscription status
You can see the SMS credit in your Burst SMS portal. Just login in your bust SMS portal, you can see the balance in top right corner.

You can see the plugin subscription status in Zoho Desk Marketplace .
Go to your Zoho Desk Settings > Marketplace > All > Installed Extensions
Go to the extension details

Please don't hesitate to get back to us for any further clarifications at - help@saasplugin.com.au