@prasharketan, this information is taken from the Astra Website:
“What’s your refund policy?
We firmly believe in and stand behind our products 100%. But we understand that it cannot work perfectly for everyone. If you are unhappy with your purchase, we will gladly refund your money. You can apply for a refund within 14 days of purchase.”
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Technically they should also give a refund within 14 days of subscription renewal because a renewal can be considered buying the product for a “1 new year”