What exact error you are getting when you access site with https
Do you have shared level or root level access to the server
About myself https://www.freelancer.com/u/redssr.html
€10 EUR in 1 day
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I am having 14 years of experience in Linux administration, can resolve your issue quickly, worked on all kind of distributions like RHEL, Debiab, Fedora, Scientific LInux, AWS Amazon LInux etc.