Yes it is ok now, the problem was due to the root certificate expired on CentOS Linux.
If somebody else experiences the same problem, update your openssl packages or download the new root cert from https://support.globalsign.com/customer/portal/articles/1426602
The API is online now, but we will check the logs to see if there were any outages. If you've added a new IP address, it can take about an hour for our system to whitelist the address.