Passive FTP connection with TLS returned expired certificate

Hello, I’m trying to connect to my wdmycloud FTP and the response when connecting is:

Certificate verification failed: The certificate is NOT trusted. The certificate chain uses expired certificate.
Expired on 01/01/2001

Any ideas in how to renew the certificate? I need to connect through a secure FTP connection.

Restarting the unit has solved the problem.

Hello,

Thank you for taking the time to share the solution.