changed http to https now have no access

the website I admin for was showing as not secure so I went into general settings and changed both the wordpress address and the site address to https and now I have no access to anything and the website does not work, I couldn’t reverse the saved setting and am really lost at what to do.
I am not the original admin and us jetpack to get access.

The page I need help with: [log in to see the link]



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