What you ordered is a 12V programmable LED Strip. 12V led strips cannot be lit using a 5V USB power bank. Because it is a programmable WS2811 led strip, you need to use 12V voltage or power supply + controller (correct current and wattage) to light up the LED Strip. The voltage is already fixed when the LED strip PCB board is produced. I've sent you a tutorial video for lighting up the LED Strip.

Dear Sadib, Thank you for your positive feedback on our product! We're delighted to hear that you are satisfied with our bright LED lights and found no faults. We'll continue striving to ensure your satisfaction. Thank you once again for your support! Best regards, Samantha