I bought the starter kit for the Kanger Topbox Mini a few months ago and it's been alright so far with a few minor problems. But the past few days, the only setting that works is Wattage, even though they are nickel coils. I've tried different temps and nothing works. I have used the SSOCC NI200 coils previously and also the OCC NI200 square coils recently. They've both worked well except for the past few days. I went to a shop and got one coil to see if the coils I had were the problem as to why it only works on the Wattage setting and no other setting, even though they are nickel coils. But the coil didn't help. I think something happened to my Topbox. Is there anyway to fix it so I can use the NI setting or is it wrecked forever? I also tried another battery and that didn't work either... has anyone else had this problem?