Connection issues with Cloudferro (Marine Data Store provider)

The connection to cloudferro, the cloud provider of marine data store, randomly fails.
Copernicus is aware about the issue: https://marine.copernicus.eu/user-corner/user-notification-service/mdsop-310-security-limits-error-429-too-many-requests

The error happens with both Copenicus Marine Toolbox and mds-toolbox, when more scripts download in the same moment