Hopefully you "primed" the new coil ! Dropping eliquid into the little holes on the sides of the coil , a little in the center,and letting the tank sit for at least 15 minutes before using? Also start out Low watts like 10w and work up the watts slowly to break in the coil up to your desired watts, otherwise you could burn out the coil.
You Tube has many videos on your set up and many explain priming the coil!
The coil has the wattage rating written on it. Try turning the watts lower, till it tastes better- I vape those at 25w- 30w
I always have boxes at least 10 packs of coils (5 packs) and this Melo tank can use Aspire Atlantis and Triton coils, Melo coils and Tobecco super tank coils. Stock pile when on sale since you will be changing out every few weeks, need back ups!
You may have burned out the coil already- no way to fix that!