BTT worked great on my MacBook Pro 10.14.6 for the first week, then suddenly disappeared. Its processes appeared normally in the process monitor, but no BTT touchbar no matter what I tried. I did a clean re-install of BTT, and it appeared again--then disappeared again. After about 3-4 rounds of this, I then selected the "Show Menubar Icon" option, and no problems for a couple of days so far, knock wood. Other apps (namely, 1Password) also suggest showing their menu bar icon as a way to ensure the program stays resident. Is that a factor with BTT?