Problem with my permalinks

update website URL as mentioned here and add https:// before the URL if it is missing

https://codex.www.ads-software.com/Changing_The_Site_URL

Try:
– deactivating ALL plugins temporarily to see if this resolves the problem (plugin functions can interfere). If this works, re-activate them individually (one-by-one) to find the problematic plugin(s).
– If that does not resolve the issue, try switching to the unedited default Twenty Fifteen theme for a moment using the WP dashboard to rule out any theme-specific issue (theme functions can interfere like plugins).

Seems to be typed right:

In a few words, explain what this site is about.
WordPress Address (URL) https://www.candygiftboutique.com
Site Address (URL): https://www.candygiftboutique.com
Enter the address here if you want your site homepage to be different from the directory you installed WordPress.

What is your current permalinks setting?

https://www.candygiftboutique.com/sample-post/

What setting should it be on?