Broken Power switch...
Best email address for help / customer support, customer service? Power switch does not shut off. Unplugged power to turn off. I understand other people have units that started to smoke and some have started on fire!
As shipping a switch from China takes more than 50 days by the sea, we suggest you buy a 3d printer switch on Amazon, which is less than 10$, please give us your shopping bill and PayPal account to firstname.lastname@example.org, we’ll arrange refund money for your buying.
Here is the amazon link: https://amzn.to/32Ms8OT
Feel free to contact us if you still have any questions.