LG Monitor LG 34 Inch 21:9 UltraWide™ 1080p Full HD IPS Monitor with HDR 34WL500-B

Hi Guys, I have a MacBook Air (13-inch, Early 2015, I bought a Minitor LG 34 Inch 21:9 UltraWide™ 1080p Full HD IPS Monitor with HDR

• 34WL500-B, 34” 21:9 WFHD (2560 x 1080) IPS Display

I connect from my minidisplay thunderbold port to HDMI and the only show me 1080 in the Scaled section.

I see in the Macbook air specifitacion Display

• 13.3-inch (diagonal) LED-backlit glossy widescreen display with support for millions of colors
• Supported resolutions: 1440 by 900 (native), 1280 by 800, 1152 by 720, and 1024 by 640 pixels at 16:10 aspect ratio and 1024 by 768 and 800 by 600 pixels at 4:3 aspect ratio

My question is, Can I set up a better Resolution in my monitor, any solution?

Thanks.