PieMarquee2 Wisecoco display 1280x400 3:1

[N1poman]

Hello, I'm new here. I would like some help with PieMarquee2 on RPi4. I have a 1024x768 4:3 monitor for Retropie and I have another Wisecoco 1280x400 3:1 7.9 inch monitor. I followed the entire tutorial and piemarquee works fine with standard monitors, but this one doesn't.
I edited the /boot/config.txt file, adding the following lines:

max_usb_current=1
hdmi_group=2
hdmi_mode=87
hdmi_timings=400 0 100 10 140 1280 10 20 20 2 0 0 0 60 43000000 3

hdmi_group=2
hdmi_mode=16
hdmi_drive=2

I also placed as indicated on GitHub, in the file /opt/retropie/configs/all/autostart.sh the command
fbset -fb /dev/fb0 -g 1280 720 1280 720 16

these parameters work on Raspberry pi OS but not on Retropie.

The HDMI-0 output is the Retropie and the HDMI-1 is the Marquee, it seems to be inverted because in the autostart it indicates the fb0 output, and the fb1 does not exist.

I don't know if I try to invert the Retropie output to hdmi-1 and if this is possible, or try to somehow change the resolution and orientation of the image that goes to the marquee monitor

Does anyone have this monitor or another 3:1 and can help me?