Review on BYEASY USB C Hub Stand Holder: 7-in-1 Docking Station for iPad Pro - 4K HDMI, 60W PD Charging, TF/SD Card Reader, USB 3.0, Audio Jack by Richard Summerall

So I got my adapter/stand in the mail today (a day earlier than expected which was nice). I like the build quality of the device. I appreciate having a stand for my iPad Pro. I have a couple of questions about my first impression: Assembly was easy, but when I assembled it and plugged in the device, a small icon appeared in the upper left corner of the iPad, signaling that it was connected. and approved. Should this character stay there? Mine appears for a few seconds and then disappears. One of the most important things (for me personally) was access to the headphone jack. I checked the headphones and the sound didn't work at all. I haven't tried other ports yet, but I'll do so today and update any info I can find. Any known issues or solutions? Is there anything else I should know? So far I've only tried Apple headphones with a microphone. Does the type of headphone matter? Appreciate any feedback.