Would help to know what battery you are using, as well as flavors.
Strange as the setups at most of the shops I go to don't do the flavors justice.
I would check with the store as well, to see if the
juice you bought needs any steeping
(although normally store bought should be ready for use)
Check your wattage/voltage
Perhaps you started to high and have impacted the coil - have you replaced the coil yet ?
Other Tanks
Kangar T3 or Kangar Mini Pro 2.
I take it you have an MVP since those are common tanks that come with that device.