>> don't remember about it
If you take your time to manually set any kind of new installation location, I assume you know what you are doing and will obviously remember.
>> complain to the software publisher
Changing the installation location should not break the program and if it does, its obviously a bug, or what are you trying to tell me?
Only scenario I can think of is something fishy.
If it’s legitimate you don’t need to hide your identity imho.