Tim, I use ANSVR on my TCS in La Palma. Most of the time it works extremely well but can be a bit finicky to set up. As chance happens I’m flying out to La Palma later today, in part to get the observatory cleaned of volcanic ash. So – no time to give a considered answer but I will try to help you out in a day or two if you still need assistance.
British Astronomical Association
Supporting amateur astronomers since 1890