Couatl is repeated asking for User Access Control as shown in the attached image.
No, it's not. At least not normally.
This only happens if you CHANGED its Compatibility properties to "Run as Administrator", which is NOT required and it's not how we install it by default. However, we don't automatically change the setting if you changed it, on the assumption you knew what you were doing when you changed it.
If your normal user account has Admin rights, there's no need to change the properties for the Couatl .EXE to run As Admin so, if this is your case, just set it back to default, which is how we install it by default, with NO Admin access required, this will of course remove the UAC message as well.
If, instead, your Windows user account has LIMITED permission, it's the one and only case where you need to run the Couatl engine "As Admin", so it's the only case where your change was required.