htaccess changed Automatically

hello

why the content of .htaccess file changed to

Options +FollowSymLinks
DirectoryIndex seees.html
RemoveHandler .php

All contents in the .htaccess file has been deleted Automatically

what's the problem ??

even the forum Stopped working

i've uploaded the orginal .htaccess file again but the problem might come again

Did you make any changes to it through cPanel/Plesk/anything else?

Nothing at all , i didn't make any change!

If you look at the file's properties, or your web server logs, when was it last modified?

(.htaccess files cannot change their contents spontaneously. Someone has changed it. Is it possible that you don't know all the ways it could be changed?)

last modified was by me,

anyway ,, can i downgrade it to 3.3.2 version ?? becasue when i was using 3.3.0 version i never face problems , but with this version i lost my 24 links in google as well as htaccess problems.

You could, and it would probably fix the issues, but if you made those changes for a reason, replacing them might cause issues later.

so what you recommend ?? stay on current version ? or upgrade it to 3.5.2 ? or Retrieve the old version?

your Opinion is important to me ^.^

Honestly, because I can't understand how or why the changes were made to htaccess, I couldn't be 100% certain.

If you are fairly certain that you didn't mean to make the changes, then upload the .htaccess that came with the vBSEO package (remembering to alter it to reflect your domain if you are using the non-www to www redirect).

You should ask your host. Some hosts add stuff like that to htaccess.