All comments dissapeared!

Try to track down where this issue is coming from by deactivating plugins one by one, and resetting your permalinks, and if it does not solve switch to the default theme, every time repeating what you wrote as test

I tried posting a comment and I can proceed normally by writing it but when the comment is sent it does not appear anywhere, I cant even see comments in my dashboard.

If this issue still remains with the default theme and no plugins activated could then be your WordPress installation got corrupted and you may need to restore it from a backup or with a fresh install. Always remember to make a backup before trying to restore or reinstall.

hope you solve it quickly, cheers!!

Hi,
404 means that what you search can not be found…and this could be a theme issue as well. Try to switch to one of the default themes.
Default themes are twentyeleven, twentytwelve or twentyfourteen as you like.

and did you reset your permalinks also, with your plugins disabled and default theme active?

For permalinks infos:
Administration_Screens – Permalinks
Settings Permalinks Screen
Introduction to Blogging – Pretty Permalinks

When you’ve resetted permalinks, try posting a test article, log out and then try submit a comment on that article.

Can you post a link to your site?
Also, you say that

I can see the number of comments in previous posts before this problem happened. But when I click to view the comments I can’t see them.

where can you see your comments to previous posts, only in dashboard?
did you check your discussions settings to see if comments are enabled?

I hope it’s something simple I am missing…otherwise I think you may need to install a fresh copy of wordpress to reset this issue.

Let me know, hope you solve this!

Hello again,
you have currently active Adelle theme, which is not one of the default.

Default themes are twentytwelve, twentythirteen or twentyfourteen as you like.
They are included with wordpress 3.8
…anyway

[edit] – I see something related with “currentlyobsessed” which calls an older version of jquery which is probably what is causing the problem in your front-end ( I hope…!)

try removing your “SHOP MY STUFF!” widget and see if something changes…

Hi trinig,
well, really I don’t know then…. 🙁
jquery is a javascript library for making interactions and other stuff within a theme or a plugin, WordPress ships with its own copy,
What I’ve seen is that in you page there were two jquery libraries called, and one was version 1.7.1 (I think I remember that…) and was called from that widget you removed, “shop my stuff”.
So when there are two different versions of the same files this may lead to some conflicts. But I don’t know if this is your case.

What I would do is to make an export of posts and pages from within wordpress, make also a complete backup of database and files, then reinstall manually the latest wordpress version, and check if this problem is gone.
If it is, then reinstall latest version’s theme and plugins used before, one by one making a single test for each step.

Here are some resources for Upgrading WordPress as well as advanced infos on this topic

I’m sorry I couldn’t help you right now, you can try to wait a little if someone had this same issue resolved and answers to this thread, otherwise try this last step that should fix it, but surely taking some more time and some effort to do it precisely without problems…

Good luck, hope you solve it!!! Feel free to ask more if you need, as far as I can suggest something useful I will do it..