CodeGuard (obfuscator) can't resolve DOTween

I have a game that uses DOTween. Im trying to obfuscate it with CodeGuard and I get this error “AssemblyResolutionException: Failed to resolve assembly: 'DOTween” Im tried to avoid the obfuscation of that DLL, but as CodeGuard doesn’t have documentation (or support!) I failed.
Does anybody knows how to do it?

Also tried http://en.unity3d.netobf.com/ but some part of the game wont work if the functions are obfuscated. Same thing happens with Eazfuscator.NET demo.

i think this issue is your scene used some call-back function.