Review Epomaker GK108S Wireless Mechanical Keyboard Kit Review: Big Size, Low Cost

What is the default key mapping for the right-most key in the bottom row, under the right-shift? Some reviews online indicate this is the FN key and can't be remapped to the traditional CTRL key. Is this true with this latest version?

There don't seem to be many options for a full sized hot-swappable keyboard, especially if you want a 'top cover' so that the switches aren't viewable. This seems to have (which I prefer) but I also prefer (need?) the CTRL key to be in the correct position.

Thanks