Sorry you’re facing difficulties.
There certainly seems to be a disparity between the various views. Is it possible you are using a caching plugin? If so, does clearing the cache or else completely removing the caching plugin resolve this?
I placed emphasis on “completely” as depending on your particular setup simply deactivating a caching plugin doesn’t necessarily guarantee that cached pages will no longer be served (so following the plugin author’s advice in this regard is worthwhile).
Failing that, I do see you already tried deactivating all other plugins and switching to a default, unmodified theme: did that resolve this or let you establish that there was a conflict with a specific plugin/your theme?
Thanks!