How to not lose credentials, form data, and active tabs while still use DU Speed Booster app? I have installed DU Speed Booster app and use it regularly on my Android Device which I believe is running version 4.4.2 Kit Kat .  

I always lose information stored on forms that I would like to maintain, mainly  Login Ids , Passwords, opened tabs I am working with, and more. 

Could someone guide me here with this troubling issue?
As @Lucky says in the comment above:

Add the browser you are using to the ignore list within DU Speed Booster, the app cache will be retained when clearing the cache.