Hi, Flashair developers website is closed?

today, I visit https://www.flashair-developers.com，show follow:
![image](https://user-images.githubusercontent.com/3394927/65746076-6161f400-e130-11e9-9b91-2c76f4fb8299.png)
it is temporary or forever？where can I find information about api  if I want to develope application for flashair ?
please help me, Thank you very much