Hi, i have received a billet box with the dna60 brand new from the shop. I installed a ssocc clapton coil 0,5ohm and vaped at 35watts. After the second tank, i reffiled it and just after few vapes the power went down to 8.5 watts, cliking the up button it appear the press up and down to lock the res, but i didnt need and want to block it and last it appears the chip code from evolve and from that point i cant do nothing. I changed battery, coil, but same thing happened. What it could be?? Im so sad about it!! Thanks for your help.