Possible solutions of your questions

Hello. 504 error means that your script does not fit in the allotted hosting limit of 30 seconds of script execution.

Optimize your website or  reduce the volume of transferred material

if You need advanced settings, we have a vps

http://www.erahost.ru/vpsline.php

Hello.
please Check the rights for folders and files.
Rights should only be 644 for files, 755 for folders. Permissions 777 prohibited and do not require
In the file .htaccess should not be of type php settings php_value, php_flag. php is running as cgi and the parameters entered in the php files.ini .
Error You can see in the control panel, the error Log

address http://www.poluchit-kredit-bez-spravok-i-poruchitelei1.ru/ we see a

check the upload and screenshot prilagaetsya

http://tools.pingdom.com/fpt/#!/cVm5Q3/http://www.poluchit-kredit-bez-spravok-i-poruchitelei1.ru/

please Do a trace to Your domain: start - run - enter cmd - in the black window enter tracert YOUR DOMAIN - after click to highlight - making enter - skopirovat here in the ticket

If You are experiencing zatrudina, view instructional videos http://ded07.net/helphost/tracert.htm

have You checked the files in the folders?

In this case, what do you mean by missing pages? Explain more clearly.

pages can`t disappear. you have a long time not updating DNS , and it is not known with caucho server you worked. it is also not known what you were doing on the websites, what folders and copied. for example for a site poluchit-kredit-bez-spravok-i-poruchitelei1.ru why you created three folders. For what? what would get confused and delete the site?

check out  in the admin area of the site that the news should be on the page http://www.krasnokamskii-gorodovoi.ru/2014/02/07/%D0%BF%D0%BB%D0%B0%D1%82%D1%84%D0%BE%D1%80%D0%BC%D0%B0-metatrader-4-%D1%87%D1%82%D0%BE-%D1%8D%D1%82%D0%BE/whether it exists, what the parameters of the sites and accounts you made ? remember all your actions

the way the page http://www.krasnokamskii-gorodovoi.ru/2014/02/07/%D0%BF%D0%BB%D0%B0%D1%82%D1%84%D0%BE%D1%80%D0%BC%D0%B0-metatrader-4-%D1%87%D1%82%D0%BE-%D1%8D%D1%82%D0%BE/  works. please describe what you were doing at the sites, which produced the work.

then watch what actions you do that then disappears. there are still missing pages?

what changes were made on the website and accrute on the 7th?

In this case, if there was a crash that lost all the records for 7 number. Is there a pattern by time of the day?

what ties these Satya? in what period of time were they created?

lost only two articles?

how did you determine that the article is missing and not just nekkorektno display? if there were no articles then you would see an error instead of a white screen

but somewhere on the website they should show up in the admin for example, how do you get them published?

and other articles?

not the place where? in the admin panel ? we are trying to help You and figure out the dependency.

i.e., the page is gone from the admin panel. you have a defunct or log in adminke , committed actions or events?

in wp should be a log of visits to the admin, check if there is anything in that time.

we checked seisa database after you created the support ticket was no problem. while that is difficult with the wording and definition of the problem

OK