The menu button on a phone does nothing. Snaglist taps it the way an iPhone does and sees no menu links appear.
Most visitors arrive on a phone. Without a working menu they cannot get past the page they landed on, and leave.
Once per crawl Snaglist opens the homepage in a phone browser (iPhone 13, 390 by 664 pixels). It looks for the menu button in the header by its aria-label, aria-expanded and class names, taps it and waits two seconds for menu links to come into view.
Snaglist runs this check and 43 others on every page of your site, every week. 14 days free, no credit card needed.
Try free for 14 days