We are sorry that some users experienced certificate error when visiting Blog, Box, or pCLSS. HSTS policy requires valid SSL certificate to ensure security of protocol connection, while the component that supports automatic renewal of it broke down.
New certificate has been already issued manually, and that component has been fixed. Our DNS server is also rebooted in order to refresh certificate cache. You may still experience connection downgrade in the next few hours, while websites should be loaded correctly.
We apologize for any inconvenience.