Review on 📷 Viltrox 23mm F1.4 STM Autofocus APS-C Lens for Canon EOS-M Mount: Compatible with M10 M100 M3 M5 M50 M6 M60 II - Large Aperture & Superior Performance by Alex Reunion

So I bought this lens for my Canon M50 Mark II and it doesn't work properly. When I try to use the lens with my LCD, the aperture doesn't stay set and the shutter just keeps opening and closing when I turn it on. When I look through the viewfinder, no. Is this lens compatible with the Mark II? Are there any camera settings I need to change to make it work? HELP