Windows Menu not expanding

Hi,

I just purchased Kutools for Outlook 2016 and installed it on one of my client laptop, i did register it on the laptop too.

When i wanted to set up an Auto BCC rule, i got this behavior when i chose "Custom" (see attached png)

Don't mind the rule shown behind, it was set up with the help from another laptop with this add-in installed and registered. I counted the nb of tab before reaching the right button/option.

This behavior/error is still here, once i clicked on "custom", the window doesn't expand at all, It stays like this but i can use "Tab" to move around the options.

I checked in outlook 2016 (32b) options, nothing from Kutools is deactivated.
"Kutools for Outlook" and "Kutools for outlook checker" are activated.

Same behavior if i run Outlook as admin.

Thanks.