Directory Opus does not update

Hello!
For months, D.O. has remained at this version :
Directory Opus Pro 12.25 Build 7942 x64
OS 10.0 (B:22621 P:2 T:1) SP 0.0
When I check for updates, a dialog box opens (image attached). I launch the installation which normally goes to the following path:
C:\Program Files\GPSoftware\Directory Opus\x86
But when I open the software again, the information remains always the same:
Directory Opus Pro 12.25 Build 7942 x64
OS 10.0 (B:22621 P:2 T:1) SP 0.0
My antivirus is ESET Smart Security Premium Version 16.0.26.0
I thank you in advance for your help!
Best regards,
Jacques HERRENSCHMIDT
Updating 12-25 to 12-30

Where do you see that path? It should not be installing into there (that folder is only there so you can export a 32-bit version to a USB stick), and sounds like you may have launched the 32-bit version on 64-bit Windows somehow.

Does the installer titlebar say if it's the 64-bit or 32-bit version that it's installing?

You can also download the installer from here and run it from outside of Opus, if needed: