Double cadence on Stages SB20

Hi there ! New to Xert and loving it so far. Using a Stages SB20 indoor trainer (dual power sensors). The problem is the cadence. The player reads the double. Tried using the bike as sensor, or individual power sensors. Even disconnecting the cadence, but it always ends up seeing the double (if i’m at 80 rpm, it reads 160). Any suggestions on how to setup or correct? Thanks !