Hello,
I was reading this forum and this can be also a solution.I have the same problems with reading the water meter.
Use a special sensor for the Aquadis+, it costs about 70 Euro. (search for Cyble sensor)

Datasheet sensor: https://www.itron.com/PublishedContent/Cyble_Sensor_pb_EN_12-11.pdf
I have not tried this sensor yet.
Rob