Localization issues

Localized page self-lang is English whereas canonical is German.
SEO analytics tools alerted me that our health score is very low.
Has anyone managed to fix this?

< html data-wf-domain=“%url%” data-wf-page=“63f72e5b5cb0bf3af98d946b” data-wf-site=“5e5e26b553a5521191e73140” lang=“en”>

< head>
< a href=“%url%/de/” rel=“canonical”/>

< /head>

Here is my public share link:

I think I found how to fix it.

Though, after publishing the update, it was set to “en” again, and will need to delete the value every time when changing settings.