Guidance: Make and manage an export declaration online: service availability and issues.
HMRC provides a dedicated page to track the operational status and any technical issues affecting the Make and manage an export declaration online service. This information is relevant to businesses and individuals who use the online portal to submit export declarations. You can check this page for real-time updates on service availability.
Source: https://www.gov.uk/government/publications/make-and-manage-an-export-declaration-online-service-availability-and-issues. Summarised automatically from the official source — general information, not advice.