I have purchased a River 2 and a flexible 100W EcoFlow brand solar panel from Amazon. I didn’t read and was shocked that I couldn’t use it without an additional cord. I opted for a generic cable instead of the brand name one. It arrived today and I rushed to hook it up outside just to see it show some amount of charge. It was pretty close to sunset but I hoped to see some proof of activity. Nothing. I took it inside and laid it on my kitchen table directly under the fluorescent table lights and still no sign of input current. Is there a minimum limit before the River acknowledges the input and shows it on the display? Am I missing something else like regretting the generic cable? Thanks

UPDATE: I waited two days for a sunny day and everything worked to perfection. I was getting upwards of 70 W out of my 100W panel in good full sun. Ready to take this out for a weekend camping now!