I have this same problem with my MX RED Green Leds.
Here is what happened. A "key" is referring to the LED on the key.
1. Z key started to die. (3 months in)
2. With leds off, 2,4,6,8,0,+ like every thing on that row was lit up even when my leds were off. (same thing as you)
3. Z key died, F7 & F10 keys also die.
4. Got Z key, F7, F10 replaced.
5. Now with leds off, the 2nd row q,e,t,u,o,[ etc are lit on when my leds are off. (same thing as you)
6. S key dies, 2 key dies, K key dies, + key dies, Home key on top right dies, Z key dying again. 4 key dies... (8 months old - right now)
Not sure if I got a defective one, but I pre-ordered my keyboard when they were out of stock and somehow they were able to ship me one next day even though the shipment hadn't come in.
Probably I am going to have to replace my LEDs again, going to do it myself, it isn't worth spending $11 to fix it and have more leds die again.