WP super cache not works with wptouch

My site was running fine with wptocuh enabled in wp super cache from last six months, but suddenly i faced the problem that even in desktop browser mobile theme is opening by default. I then disable and and enable wp-touch and even uninstalled , installed wptouch but problem is still there. Even my website failed to load then what i have done , I rename plugin folder using fileZilla to plugin1, dashboard come after I have disabled both the option mobile support in advanced setting and in plugin disable wp touch. after that also changed caching option as php cashing in place of mod_rewrite rules. In .htaccess file i delete all the mod rewrite rules. After that my site came alive. I have tried many times to again enable wptouch but same problem. Where is the problem could anyone help. Now I am not able to set mobile theme any solution