Set the page language in Wix

1. In your site's dashboard, go to Settings > Language & Region.
2. Pick the right language in the Site language dropdown and click Save.
3. You can also use Settings > Accessibility Wizard > Scan Site, then Set main site language under site-level issues.
4. Republish, then view your page source and check that the <html> tag has the right lang value. If it doesn't, contact Wix Support.

Check it: publish your change, then run a new scan from your dashboard. The issue should drop off the list.