Hello everyone!
I installed a new language (Spanish in addition to English) to my test site following (apparently) all of the steps about this topic that I've found in different articles and videos, .... but it only displays the Spanish flag.
Checking the 'Multilingual Status' option in the Admin Dashboard, it shows the warning message already mentioned in the subject of this question.
I'm using Joomla 4, Helixultimate latest version, SP Page Builder Pro
The site is https://madaura.com/work
Thanks a lot for any advice!