Error - "https://api.miniapps.ai/chat": <no response> NetworkError when attempting to fetch resource. (api.miniapps.ai)

I get this message (("https://api.miniapps.ai/chat": NetworkError when attempting to fetch resource. (api.miniapps.ai)) everytime when I send something in the apps... i tried another apps/chats - I tried another browser with the same result... tried to log in and out.. no success.. still the same error..It started this week, the weeks before all was good...Any ideas how to fix that? Thnaks for the help...