When did the requirements change for increasing energy to 150?

Requirements have changed? I just checked and I still see the offer of increasing energy capacity from 110 to 150 at the cost of 799 diamonds. You get a one time bonus of 450 energy. Developers fixed the wording about 1-2 months ago, removing the word "permanent", and making the offer more clear. It now says "1 remaining" which may be confusing, but it means you can only buy it once. But the requirement is the same as it has always been.