1.- Replace Eazfuscator.NET.exe and Eazfuscator.NET Assistant.exe from install folder.
2.- Replace Gapotchenko.Eazfuscator.NET.dll, Gapotchenko.Eazfuscator.NET.Tools.dll, and Eazfuscator.NET.Assistant.Options.dll from Components folder.
3.- In files Eazfuscator.NET.exe.config and Eazfuscator.NET Assistant.exe.config change to true bypassTrustedAppStrongNames enabled.
4.- From GAC (x86 and x64) delete or rename files (if Eazfuscator has created them) Eazfuscator.NET.ni.exe, Eazfuscator.NET Assistant.ni.exe, Gapotchenko.Eazfuscator.NET.ni.dll, Gapotchenko.Eazfuscator.NET.Tools.ni.dll, and Eazfuscator.NET.Assistant.Options.ni.dll.
5.- Delete any Old fake license you had installed previously from other version.