Hi
(Edited to add - I think I may know the problem, I think I have misunderstood a MacWorld online article and have bought the wrong kind of Hub, I believe the one I have bought is not compatible with DisplayLink, but if anyone can confirm for me, that would be helpful as it seems that this Hub will only ever allow one monitor to be connected for me).
I have exactly the same problem, having just bought and connected an EZQuest USB-C Multimedia 10-in-1 Get 2 Hub, and running a MacBook Air M2 2022 model.
I am not an expert by any means, but I have carefully followed all instructions, installed the software, made the required Privacy changes etc etc, and I can only get one monitor to receive a signal.
I am attempting to connect two monitors which are, acceptedly, old, and only have VGA out ports. One is connected via an HDMI adaptor, and this is the one I am plugging in via the USB-C hub. The second I am connecting via an Apple brand VGA to USB-C adaptor, which I have tried plugging into the Hub, and into the laptop directly, but I cannot get the two motors to work at the same time.
I can get one running, but then if I connect the second, there is no output signal to that monitor, and the laptop cannot 'see' it in Displays settings. If I then disconnect the working monitor cable, then after a few moments the laptop then recognises the other monitor that is there, and it starts to work.. so, only one will work at a time.
However, I don't know if I should be doing anything more with the DisplayPort software? I have enabled the auto startup function, but then I am not doing anything with it, and it's not asking me to do anything... where am I going wrong!?
Thanks to all, from this first time poster
LC