Background of the issue:
I am trying to resolve an issue where most of our translated pages on the site 隐藏链接 are de-indexed. They were indexed before but are now showing as 'Crawled currently not Indexed' in Google Search Console. We use the 'Disable Browser Language Redirect' in Language settings, which makes the suggestion found here: https://wpml.org/forums/topic/pages-are-not-being-indexed/ not applicable.
Symptoms:
Translated pages are de-indexed and showing as 'Crawled currently not Indexed' in Google Search Console.
