Hi Lorro,
Admin page > Plugins, find "WP Total Cache" and deactivate it,
deactivate your other plugins,
Temporarily switch to the default theme, TwentyFourteen,
i did all but no solution still i am getting page not found.
only cloudflare-ngnix instead of the usual Apache setup. is pending can you guide me in this in deep ? , i means all that setting need to be done by me or it will be done by my server guys ..
any other solution please let me know
Thanks for u r great support till now