I have a multisite setup with 3 sites in 3 languages, as follows:
domain.com/subdirectory/ - main site in Spanish
domain.com/subdirectory/en - english version of the site
domain.com/subdirectory/fr - french version of the site
The plugin is activated for the network and appears in the admin of all 3 sites. Each site is configured to it's correct language in Settings > General. Each site has content.
However, in the Spanish site, the language switcher plugin displays the 'you must activate other languages...' message, and no links to French or English.
In the French site, only the English link is displayed (I do not want a link to French from within the French site, so this is a start but I need the Spanish site link to display as well).
The same happens for English. Also, in the plugin configuration screen it only shows links to the French and English sites (when on French or English) but does not show Spanish. When in the Spanish config page, neither French or English is shown.
Thank you in advance for your help.