As mentioned a few things could be going on.First find the stats on the mod and check to see what the minimum resistance that your mod will fire. If the .5 resistance should be fine check to insure your coil is installed properly.( I'm assuming your using premade coil as I don't believe alantis has a build deck) in this case you might consider trying another coil.( we're doing some troubleshooting here.) make certain the coil is the correct one to use for the Alantis. Make certain it's seated properly and tightly screwed in.If that checks out , look at the connection pin on the tank. if it's adjustable take a screwdriver and adjust it out some. Then try to see if that fires. I'm not familiar with your mod but on mine you can also adjust the connection pin, if yours is able to adjust move it upward . see if it fires after that. If it's still not firing, test the mods connection pin by trying a different atomizer. If the different atomizer does not fire, even if your connection pin is not made to adjust GENTLY try to move the connection pin on the mod upward a bit (this is to try and achieve contact between the atomizer and the mod).if it's still not fireing after you GENTLY lifted the mods connection pin I would then immediately contact the seller or merchant who sold you the Mod and ask for a replacement mod. They SHOULD have no problems with a exchange of the device. However, if they DO have a issue with replacement, contact the manufacturer of the mod directly. Being that it's a new purchase, they should offer a replacement without issues. I do hope this helps and wish you the best.