Using API - Can't access to API

From this morning I can not authenticate to the APIs using the Getclient method. This is the URL Https://eu-api.jotform.com/v1/user
I get the error message request canceled: Unable to create SSL/TLS secure channel..

I found the problem: I noticed that you have updated the security certificate and you have modified the compression protocol. So I had to update my application to the .net version 4.5 to use the ServicePointManager directives. SecurityProtocol = SecurityProtocolType. Ssl3 | SecurityProtocolType. Tls | SecurityProtocolType. Tls11 | SecurityProtocolType. Tls12;