Chat language changed to Greek all of a sudden

The language is changed to Greek although the US English is set in settings. I see that lot of people complain about te similar issue.

I found the following error in the console.

“Access to XMLHttpRequest at ‘https://web.facebook.com/plugins/customer_chat/SDK/?app_id=&attribution=wordpress&attribution_version=2.3&channel=https%3A%2F%2Fstaticxx.facebook.com%2Fx%2Fconnect%2Fxd_arbiter%2F%3Fversion%3D46%23cb%3Df1a5bdc547537c8%26domain%3Dmywebsite.com%26is_canvas%3Dfalse%26origin%3Dhttps%253A%252F%252Fmywebiste.com%252Ff1043a1f6f6ce1c%26relation%3Dparent.parent&container_width=1903&current_url=https%3A%2F%2Fmywebiste.com%2F%3Fswcfpc%3D1&event_name=chat_plugin_sdk_icon_iframe_load&has_explicit_interaction=1&is_loaded_by_facade=true&loading_time=581&local_state=%7B%22v%22%3A1%2C%22path%22%3A2%2C%22chatState%22%3A1%2C%22visibility%22%3A%22not-hidden%22%2C%22showUpgradePrompt%22%3A%22not_shown%22%2C%22euit%22%3A1657760065206%2C%22shouldShowLoginPage%22%3Afalse%2C%22greetingVisibility%22%3A%22hidden%22%7D&locale=el_GR&log_id=f61c63c1-12ff-45df-9cb7-07474de6160a&page_id=106416307842013&request_time=1657760709625&sdk=joey&suppress_http_code=1’ from origin ‘https://mywebsite.com’ has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.”

The page I need help with: [log in to see the link]