Have you tried uninstalling using the installer?
When I had my Mojave issues, I utilized the installer to uninstall DPS and it took everything off.
In the meantime, as suggested by Mo, I have purchased Boom 3D and it plays nicely with Mojave.
I’m an avid music listener and couldn’t wait on the DPS issues to be resolved, I’ve tried installing and reinstalling and it even screws up my keychain and internet mail accounts, having me re-enter passwords.
I feel your pain, but try using the installer to uninstall DPS, this is what is the preferred way of removing.
If you have already done this, then I’m not sure what to do, I’ll leave that to someone more knowledgeable then I.