I had subscribed to both Kite API and Historical Data, but closed the Historical data addon 3 days before the due date. So, a) 3 days worth of credits will it be used to extend Kite API access by 3 days b) Can use historical data addon for 3 days when I renew it, without paying for extra credits ?
The add-on historical data subscription works only if you have base Kite Connect subscription. If your base subscription ends and you renew it, historical data subscription will work for the number of days it is valid for. In your case, it will work for 3 more days, if you renew the base subscription.
If your base subscription ends and you renew it, historical data subscription will work for the number of days it is valid for. In your case, it will work for 3 more days, if you renew the base subscription.