Yeah, looks like mobile version of the logo should be 250x100, per perplexity:
For **Xenforo mobile**, a **logo size around 250 x 100 pixels** works well for most website headers, balancing clarity and load times[2]. On Xenforo forums, users have reported good results with logos up to 451 x 68 pixels, but using a wide logo like that may appear small on mobile unless you adjust CSS to allow it to display larger[1][3]. One user found that an 800 x 130 pixel logo displayed well when styled properly[3].