LED strips: Red lights can't be controlled
Exactly.  It's a cheap cheese controller, if the price tag wasn't a dead giveaway.  

Get another one from anywhere, long as it's 


your same voltage (almost certainly 12V, some don't even care) and 
the same number of channels (RGB and RGBW controllers are different).  


In fact, I'm now seeing RGB controllers from top tier makers  (I can't remember the brand, GE, Siemens, Philips, Sylvania, one of those) - also IKEA makes surprisingly good stuff that performs very well IME, and is top rated by the Youtubers who do teardowns.