its really common for people (including me T_T) to break the switch that switches between 2.4/BT/wired. be VERY careful when disassembling and reassembling because the switch is very small and can easily break off.
honestly, i would ultimately not recommend spending the extra money for triple mode because the battery life was really terrible in my experience, i had to plug it in to charge daily and that was without using RGB at all.
ALSO, customising the 3 side keys/knob/RGB does NOT work unless the keyboard was plugged in. in other words, you cannot use the epomaker customisation software on 2.4hz/BT connection because it simply does not detect the keyboard. this is a common problem that i saw on reddit as well.
also, for those who are very particular about the sound of their keyboard, i have looked at many reviews/sound tests + from my personal experience, its really difficult to stop the board from sounding kinda hollow so if that's a big issue for you then maybe look for a different kit.
i still like the kit and think its a decent budget option for a first time keyboard builder like myself, but that lower kit price does come with drawbacks.
u have been warned!!!!