I have the site working for a year. But Today is down cannot connect to database in Live website. In editor mode is still working. Please advise what happen in Wix now?
Have you simply tried contacting Wix Support to see if they have any replies about it already?
https://support.wix.com/en/article/contacting-wix-support
https://support.wix.com/en/article/contacting-wix-by-phone-3491545
Wix could have a bug or it could simply be routine maintenance on their servers which will be finished soon.