What happened to this app?

Ive been using this app for years and the latest update was awful. It stopped and didnt work so many times! I had to restart the app again and again.
Moreover, web translation is no longer available at some point, which is very disappointing.
I wish I could go back to a previous version.
Id also like to see my bookmark list at the very first sight, instead of most visited sites. Can you add the option for that?

때ㅜㅊ about Puffin Browser Pro, v5.1.3