I'm Ivan, and I wrote FluidEQ. This is the place for questions, for anything behaving oddly, and for things you'd like it to do.
Worth knowing before you ask:
- FluidEQ is a graphical interface for Equalizer APO. Windows only, and APO ships inside the installer — you don't have to go and find it.
- It's GPL-3.0. The source is in this repository, and the build on the Releases page is free. Windows will warn about the publisher, because that build isn't code-signed yet.
- If something is genuinely broken rather than just confusing, the issue tracker is a better place than this thread — it doesn't get lost.
I'm one person, so an answer might take a day. It will be me answering, not a support queue.