@Anckorage I’ve posted more details about the problem in a separate thread. I hope you can resolve this issue.
To get the ContinuuMini to enumerate on the Teensy change line 212 of arduino-1.8.13/hardware/teensy/avr/libraries/USBHost_t36/enumeration.cpp
from
if (enumbuf[0]) dev->enum_state = 5;
to
if (false && enumbuf[0]) dev->enum_state = 5;
This skips reading the Manufacturer string.
I’ll try to find some time to put a Teensy patch online for forwarding MIDI and configuration.