Rekord Buddy doesn’t write to the USBs or even to the rekordbox collection itself (it goes thru an XML bridge file) so there’s no way that something like that would cause a glitch on a CDJ.
Because some people have lied in order to use Rekord Buddy once and get a refund, I put together the refund policy that everyone has to agree to before buying the app.
I think it’s more than fair. If you have a real problem that I can’t fix, I always provide a refund. But of you just have buyer’s remorse and can’t show me something that really doesn’t work then that’s a different issue.
Hope this helps. I’m looking forward to helping you out.