Earlier quoted context omitted.
Why did it used to be 2 months? When did it change? It absolutely used to be 2 months, otherwise, my account would still be able to use those 300$ credits. But I just checked, it can't. I still have the expiration email if you want.
I too remember only getting 2 months to use them- I signed up sometime Nov/Dec 2016. Guess they changed it fairly recently.
They changed roughly one month ago. I was still with a little bit of credit left and instead of expiring they told me that was extended