Push to GSTN (India) not working

Push to GSTN (India) not working

Hi all,

I am on Zoho books 1 year free plan. I am trying to file GST via Push to GSTN feature. Every time I try it, it asks to enable API access from GST portal. 
The API is enabled for 30 days access but Zoho Books is never able to access the API. The software is able access the past filing records however.
Could anyone please help me troubleshoot this issue.