The main difference is that the free Cloudflare Universal SSL Certificate is shared with multiple customers and multiple domains. If you want to purchase an SSL Certificate from Blacknight, it will be dedicated to your domain and comes with our full support. We also offer Extended Validation (EV) SSL Certificates which provide additional validation of your organisation’s legal identity. Extended Validation is not available with the free Cloudflare SSL.
If you are using Cloudflare, you can upload a Blacknight SSL Certificate to Cloudflare as a Custom SSL.
We’re happy to advise on any specific queries you may have in relation to your needs. Please feel free to contact us directly.