First time posting to the forum. I bought my husband an EM-RiVa 510 for Christmas. Charged the battery and filled the empty cart with an empty teabag and about 15 drops of the eliquid. He gets absolutely no vape. He says he can taste it but there is no sensation of anything going into the lungs. What are we doing wrong. He holds down the button while inhaling but still nothing. HELP! TIA