403 Error

– First, to rule out any theme-specific issue, try switching to the unedited default theme for a moment using the WP dashboard. If you don’t have access to your admin area, you can switch to the default theme by renaming your current theme’s folder in wp-content/themes and adding “-old” to the end of the folder name using via FTP or SFTP or whatever file management application your host provides. Alternately, you can remove other themes except the default theme. That will force your site to use it.

– If that does not help, contact the developer of your “kallyas” theme, which is a NON-WP.org theme.

thanks for response tara!
even if I use a wp theme – same issue. is my site infected by bad code?

try scanning your site here: https://sitecheck.sucuri.net/scanner/

Security report (No threats found)
I am at a loss

That’s good!

I suggest you contact the theme’s developer for the other issue you are having.

i allready did it, but everyone is wondering…
because the issue also happens with wp theme i think the issue is not theme related?

Have you tried resetting the plugins folder by FTP or PhpMyAdmin. Sometimes, an apparently inactive plugin can still cause problems (because the hooks remain unless plugins completely removed or some plugins stick around in cached files. So by renaming the folder, you break them and force them inactive).

yes I tried this already – deactivated all plugins by ftp.

its really strange – maybe the site is infected..?!

What’s your site URL? Where is it hosted?

hi

site URL: https://cimedia.at/

hostet @ https://www.easyname.com

sorry, I am running out of ideas

me too..

It could be a server security configuration issue. See: https://www.ads-software.com/support/topic/cant-save-a-post-or-page-with-certain-text