arming

I just received my Lizard 95 and tried to set it up. So I configured all the usual stuff in betaflight which worked fine so far. Once I finished and tried to arm it, it didn't arm but started to beep (see in the video). The aux is configured correctly and works in the "modes" tab. I enabled...

Using Flysky's AFHDS 2A protocol with older Flysky FS-i6 and new Flysky X6B i-Bus, PPM, PWM receiver set up for PPM. Receiver bound. The receiver controls are operational under Betaflight 3.0.1. Escs are calibrated. Channel 5 is mapped to AUX 1 for arming. Under Betaflight, I can see switching...