Thanks for the additional details @PoyTB. Sounds like you’re doing a lot of things right. Here are my next suggestions:
- The first thing I would recommend it to perform a Forced Restart of your iPad (Force restart iPad - Apple Support)
- I would definitely try a different USB cable and ideally use the one that came with your Hercules controller. Not all USB cables are created equal. Cheap cables can under perform and fail prematurely. If you can’t find the original, I suggest you look for a high quality alternative (like the one that came with your iPad). I would then run some tests with the new or original cable and the 22.2W power bank from before to see if that solves the issue.
- I checked the Hercules DJControl Mix manual and they do not specify any power requirements for the power bank. If steps 1 and 2 above don’t solve the problem, I recommend that you perform some tests with the new/original USB cable connected to a high quality power supply instead of power bank to see if that fixes the issue.
- I also recommend you reach out to Hercules tech support to see if there are any known issues with this particular hardware and if they have any firmware updates that you can download and install.
