Barrow Digital OLED Display Flow and Temperature Sensor help needed

[chris blackford]

Hi all I have just installed the Barrow Digital OLED Display Flow and Temperature Sensor its showing temp but not flow it just says 0 any one got this item and not what I can do to fix it

 

[chris blackford]

Need to swap the internals around as it will only read flow in one direction. If it’s the same as mine I think there’s 4 screws on each end and it comes apart.

Thanks