There can be several reasons for this error:
1. Deactivated cookies for you or your clients:
Make sure that cookies are activated in your browser and that your clients have also activated PicDrop cookies for third parties. Access to password-protected areas is not possible without cookies. Alternatively, deactivate the password to allow your client access to the gallery.
2. An outdated web integration on your server:
You are still using an old web integration. Please download and install the latest version of the web integration. You can find the download of the web integration again in your account settings and you can simply overwrite your old web integration.
3. Other installations on your server (WordPress and Co.)
Probably other applications such as the popular WordPress or Drupal, Joomla or a framework are running on your server or storage space. They often save certain addresses like www.yourname.com/gallery etc…. If you or your client try to call PicDrop via your web integration, this application “kidnaps” the entered address and displays error messages instead of PicDrop. To eliminate or exclude these applications as error causes, please change your WordPress or other programs on your server and exclude your PicDrop folder from their functional range. If you have detailed questions, please contact your programmer or system administrator or the manufacturer of the corresponding program to change this behavior.