Sorry for the late reply, but Vixtron had an issue with the WiFi antennas in the Cerbo GX. That might have caused your issue too; https://community.victronenergy.com/storage/attachments/18497-2021-03-cerbo-gx-wi-fi-issues-when-combined-with-g.pdf
Thanks for that!
They advertised the batteries for US$ 73.90 + free shipping to Australia on Alibaba.
On Alibaba they offered me US$ 77.00 + $2431 shipping. After my earlier posting here they send me an email to which I responded I would like to place the order for 136 batteries at $73.90 +...