I have a reply from FTDI. They are told me that driver working well with Catalina:

"We have resigned our VCP driver to be compatible with macOS 10.15, this version (2.4.4) can be found on our website:

www.ftdichip.com/Drivers/VCP.htm



We are currently working on a .dext version of the driver to be compatible with the newer versions of macOS (big sur).



Apple also include a VCP driver in macOS (AppleUSBFTDI.dext), if you are using a default FTDI device this driver should associate to the device and create a COM port in the ‘/dev’ folder.

It would appear as the following, where the ‘xxxx’ is the devices serial number:

/dev/cu.usbserial-xxxxxxxx

/dev/tty.usbserial-xxxxxxxx"

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