In wappler I can connect with the database manager without a problem.
I tried to re-deploy, shutdown and clear all services + deploy etc but still same problem.
The connection was working before. Anyone any idea what the problem might be?
If you are connecting to managed database for your live site, you will have to edit the Server Connection database connection to that target to point to the right credentials.
So switch to the target and edit the database connection in Workflows / Server Actions