It sounds like your Achat game has not installed the upgrade for this pose for some reason.
Sometimes this can happen if your antivirus rejects Achat and the Achat updater.
Ensure AChat is enabled in the firewall of Windows, or/and in the firewall of your pc virus protection software (if exists), or/and in the firewall of the router (if exists).
Check the settings of all firewalls to allow Achat: AChat_setup.exe and Achat Version Updater
Then try a full uninstall and re-install of Achat. This is to make sure you have all the updates.
Turn off any browser plug-ins such as Skype (Skype has caused issues in the past with Achat)
Restart your PC.
If none of these solutions work, contact Achat’s Support for further advice.
Support is located on top menu bar next to Shop.