1. its the which is ok with thumbnail gallery: https://khetkhamaar.info/%e0%a6%86%e0%a6%ae%e0%a6%b0%e0%a6%be-%e0%a6%95%e0%a6%9c%e0%a6%a8/
Your theme, or one of your plugins, seems to modify the WordPress Core gallery feature. As a result, Jetpack’s Tiled Gallery and Carousel modules won’t be used on that page. You’ll need to use the standard WordPress Galleries for both modules to work.
2. it’s the which has broken the lay out: https://khetkhamaar.info/?p=10894&preview=true
That post isn’t published yet, so I can’t access it I’m afraid.
After activating Photon my post, category and tag archive are showing featured image but not the home pages. What CDN info of photon I should use to configure in WP super cache.
You do not need to configure anything: Jetpack’s Photon is automatically applied to all images on your site.If you don’t see any images on your home page, start by deactivating the Photon module; it that helps, the way your theme inserts those images is most likely not compatible with Photon. You’d consequently need to edit your theme, or deactivate Photon on your home page, as explained here:
https://jetpack.me/2013/05/03/skip-a-image-with-photon/
what to do with all the js and stylesheet to rank high in google page speed.
That’s something we’re working on at the moment, and the future version of Jetpack will include some performance enhancements to improve Google Pagespeed rankings.
Until then, I would recommend that you go to Jetpack > Settings in your dashboard, and deactivate the modules you don’t use. You can also use caching and minify plugins that will take care of the minification and concatenation for you.