Hello guys

I have a little problem with my app, actually I created the app with HTML,CSS and JavaScript. But I dont have any idea on how to develope android apps like putting the icon,splash screen, menu and all that, so I use appyet(an online android app builder) to do all that but the actual content of the app was coded by me.
My problem with the app is that, the first time I press a button to open the content it will use the phone default apps(eg wps office) to open the content but when i press not agree and I press the button of the link the second time, it will work normally inside the app.
Pls does any one have a solution, pls guys help me, thanks in advance as I anticipate for the solution.

[b]PS: [/b]Its just a demo(scrap) app,just wanted to test if I could build(i.e the splash screen, icon,ads,) online