I get an unsupported extensions or bad extensions found in CSR error message. What to do?

The certificate provider will return error as "unsupported extensions" if you're entering non-alphanumeric characters in the CSR. Please make sure you generate the certificate request using the instructions provided here.

To make sure your CSR is valid, you can use this online tool.

Once you have a valid CSR, you can use it for the certificate activation.