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Problems installing all Air software in OAX 10.13.5

I have several products from Air Music, including AIEP3 Complete, but cannot install any of the ones I need in a MacBook with OSX 10.13.5. This includes DB-33, Velvet2, Hybrid3, and MiniGrand, among others. According to the documentation they should be compatible, but at the end of the installation process I always get: "The installer encountered an error that cause the installation to fail. Contact the software manufacturer for assistance".
In the attached example I was trying to install DB-33 version 1.2.7.

Can someone help me, please?

Best regards,

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