I have also had problems. In the Linn account the message appeared to update. After that only my Klimax DSM was visible, but not my Sneaky DSM.
I could not add the Sneaky again via the Linn account, the Linn app or Kazoo.
The fallback on the Sneaky solved the problem, so the software was reinstalled and I could add the Sneaky again via Kazoo.