Is your feature request related to a problem? Please describe.

Not possible to filter by language/localization.

Describe the solution you'd like

Use GroupfinderFlags API or work with the developer to have an API and use it.

Describe alternatives you've considered

No alternative possible.

What is the problem you're trying to solve? Is it about the language barrier on EU realms or is it about the latency on US/Oceanic realms?

Regarding the language, there are already language filters provided by Blizzard in the dropdown.

If it is about the latency, I already provide a separate addon "Premade Regions" that adds region filtering. There is no version for EU realms because they don't have the problem. See the full list of keywords and the example page in the wiki how to use it.

I'm trying to filter by language. While your addon provide many additional filters, it also provides filters that are already provided by Blizzard (like heroic, mythic, ...).

A problem is that my main language is French but I use WoW in English and, for a reason I ignore, Blizzard block me from removing English and Portuguese from the language in filters (they are locked) 🤣

I would like to be able to filter any language.