As of September 10, 2018, the SSL certificate on the receiving end of the EET (Electronic Sales Registration) system was changed. This certificate secures the connection between point-of-sale devices that record sales and the Financial Administration.
If your instance is hosted in our cloud, no action is required on your part. For self-hosted installations, you need to ensure that an up-to-date version of Java is installed on the server.
More detailed information is available on our website in our documentation.