Thanks for bringing the issue to our attention.
We regret to hear that your Mars II doesn’t seem to work properly now. In order to help us document the defect, please try below steps to see how it works:
a. Charge the Mars II to full capacity
b. Keep it plugged in and use a pin to plug into the reset hole for 3-5 seconds and try again
If the issue remains, please contact us at firstname.lastname@example.org with a short video to display the issue. We will be glad to help you out with the 12-month warranty.
Sorry for the trouble and inconvenience caused. Thanks for your understanding and support.
Anker Support Team