If you are experiencing issues during the installation of our OP software on Windows, the latest update for OP is quite new and there is not yet a high volume of downloads, so this warning may appear:

Click on More info, and then on Run anyway:

This should complete the installation of OP software.

If you are experiencing the same issue on MAC, we would recommend the following in order to be able to download the OP software:

Go to macOS System Preferences > Security & Privacy > General and make sure that the option for "Allow apps downloaded from" is set to "App Store and identified developers.