Why are some pages, articles, FAQs not showing in search results?

This can happen if Alogolia is turned off in the backend, preventing new changes from being synced. To check this setting:

Step 1.
Go to Algolia Search -> Search page

Step 2.
Make sure that "use aloglia in the backend" is checked

Step 3.
Click save changes

Step 4.
Go to Algolia Search - > Autocomplete

Step 5.
Click the re-index. button next to All posts