Blog display difference if we are logged or not

I have some issues with blog display.
If I’m logged I can see the blog Sidebar with categories, tags, topics. But visitors cannot see.
Same thing with the list of topics. I can see all topics when I’m on the blog page and logged as administrator, but only few as visitor.
The topics are public and they are accessible by direct link if we are visitor or logged.

Maybe I forgot something, but can’t see what ?
Here the link for our blog :

Thanks for your help

Hi There,
Thanks for the mail. Please use this plugin to create temporary access for us, its automatic login link and does not requires sharing your admin details. here is How To guide. at the and don’t forget about  “Set as private reply” at the bottom of the message box
Looking forward to hearing from you soon.

Wich mail adress should i put for the access ?

I found what’s wrong !
It was the plugin WP fatest cache.
I desactivate it and everything works now.

Thanks anyway for your answer

Thank you for the feedback

I will close this case now, Feel free to contact us again if you have other questions