Having problem with E-paper when using virtual usb port. Maybe somebody know the problem?

[RGudo.1]

Hello I'm using STM32L0538 - Disco board. I have problem with E-paper when on SMT32Cube program putting virtual port.

When I don't use virtual port E-paper working fine.

In this link are more information (code, STM32cube program foto)

https://community.arm.com/developer/tools-software/tools/f/arm-compilers-forum/46034/having-problem-with-e-paper-when-using-virtual-usb-port/163906#163906