Hi folks - I am new to the Forum. Am seeking help to break through the customer service wall at Bluetti. Is there an efficient way to connect directly with Bluetti warranty department? I have 2 defective Bluetti 120 W solar panels bought through an Ingiegogo Bluetti offering (late summer 2020). I have experienced exceptionally poor customer support for the folks responding from sale-ca@bluetti.com, which seems to be the only email address I can find. Thanks, Andy