How do I fill the Xros 4 Nano with e-liquid for the first time?

Snap off the mouthpiece and squeeze the e-liquid through the filling hole, then put the mouthpiece back and make sure it is shut firmly. If it is your first time filling the e-liquid, wait 5 minutes for the coil to prime before vaping. (Page 5)

From the official Vaporesso Xros 4 Nano Pod Kit manual, page 5

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