This is unsurprising, I believe the USB power header only supplies 5V/1A, this is enough to handle charging or running a typical 5V usb device, but the ripcord is stepping that voltage up to 9V. I checked the faq for the ripcord, they are expecting 2.4amps on the USB port it’s plugged into. So it’s likely under powering the ripcord.
There is also sometimes issues of mixing digital pedals on the same power source as analog equipment, noise from digital pedals (CPUs/LEDs/etc) could bleed into the sound. This is why a lot of higher end pedal power supplies have isolated ports to reduce the crosstalk between pedals.
So there is probably not a fault with anything here, it’s likely a compatibility issue.
As an aside, when I plug in my count to five on the same power supply chain to my sansamp gt2 pedal, I get a lot of digital noise in the audio. I have to run them in separate power supplies, not really any one’s fault, no one can test every combination.