Being a full-stack web developer and having worked with SSL certificates of various types, including self-renewing Cloudflare certificates, I can assure you that your project is in capable hands. I understand the importance of a secure online presence, and for your work scope, I will ensure that all of your domains are properly configured to display as 'https - secure'. In addition, I can efficiently handle tasks like accessing all cpanel via WHM and fixing Grant Access to Cpanel Support.
Utilizing my expertise in server security and optimization, I will not only install and configure the necessary firewall effectively but also change the port number for enhanced security. Moreover, I have experience with libosodium installation and configuration, ensuring that all cpanels are perfectly aligned with your requirements. On top of these technical skills, my knowledge in performance optimization- a skill relevant to Magento's slow loading time as per GTMetrix screenshot - will immensely benefit you. Together, we will ensure a clean and faster-performing server.
In summary, my proficiency in SSL integration, experience with cpanels and firewalls along with my dedication to deliver high-quality work should make me an ideal choice for your project. Let’s connect soon to discuss the finer details of this project!