I have no idea how to fix this, but one possible solution would be rebranding, or making Chipmixer wallet.
Or just don't have a .com. ChipMixer is dominating in bitcointalk in spite of everything. As
I've already said, it'd be better to just link users here, in the ANN thread. Then, they can read a summary of what's ChipMixer or/and just click the onion link.