I've been winning more or less consistently 3 keys a day with 7 malus per key. Until a couple of days ago, I didn't have trouble winning 2nd key on most challenges, now I think I can only win it on watering, fighting and hoeing. Third key I can only win on the hoeing challenge. I use separate...
I've won a key that looks like AAAAAA-BBBBBB-CCCCCC-DDDDDD-EEE. It is not a valid steam key. Does anyone know what this is? It does not have any digits, only uppercase letters.
All you can do is report them as duplicate here. According to their docs, Indigala used to replace duplicate keys, but because some people abused this by asking for replacement for valid keys, they discontinued this policy.