Multiple layouts warning ?

[#1]

Attempting to alter my a page design to accomodate landscape view on a phone ( Using iPhone 5 as template), I am runnung into some serious trouble.

Setting a breakpoint for the lanscape mode with of the screen (568), hiding unwanted elements for this breakpoint, and rearanging my slide widget, -when viewing the preview, I am met with a warning regarding multiple alternative layouts (see attached)

What may I be doing wrong here ?

[#2]

It is simple:

You have alternate layouts: desktop, tablet, phone and you created on your desktop pages breakpoints, which are smaller/as small as your alternate layouts. Consequence: The browser has to decide, what to use (breakpoint of desktop page or alternate layout, when rendering the pages.

So simply do, what the alert says.