They do have an app and it works for me with Windows 10 and Windows firewall. I say Windows Firewall because you will need to allow an exception within Windows Firewall in order to use the Mixcraft remote. For me there was an automatic pop-up that prompted me to add the exception. If you do not get the automatic pop-up you may need to go in the firewall and make the settings manually. According to the website, the app is compatible with Mixcraft 6 and 7. It may be compatible with MC 8 but I'm guessing Acoustica did not do extensive testing with v8 to certify it.
Tom Was Already Taken, Therefore Thomas
Mixcraft 8 Pro Studio 64-Bit
Windows 10 64-Bit
AMD Athlon II X4 645 3.1 GHz 10GB Ram 7200RPM HDD
Behringer UMC404HD v4.59 interface