Pay for marketplace asset upgrade

Hi, I have a question about official stance of paying for marketplace asset upgrades. I have bought an asset a long time ago since UE4, and not used it since. Recently the author stopped supporting at 5.2, and made a new product for V2 for UE 5.3. The author claims the original product is in blueprint, and now it’s changed to c++, but otherwise it is the exact same functionality.

What is the offical stance on the matter?