Please disable all of the plugins, clear the cache of your browser and turn on only the basic woocommerce plugin, then check, if the issue still exists.
this is probably because of you ssl configuration. Did you enable SSL while everything was created or before?The page even says that the configuration is not complete and that this site is not safe.
This code I sent you, does not have anything in common with the menu.
But, I checked the CSS code you have, and it looks like you provided before my CSS code some other class to hide the responsive menu, just remove that line and it will work.
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Still have a problem