The customer support from clickssl has been great since our first conversation with them - they offered advice on how to best utilize their services for our business needs.
We have used their code signing service where we created a unique public key per project which allowed us to encrypt sensitive data files stored online, allowing only authorized users access. This was essential when dealing with an internet provider who required all web applications hosted via their platform be signed by one vendor or another (which could not happen due to the encryption).