We have installed our MPPT 150/100 in 2017 and have always experienced problems with the bluetooth connection.
Problems vary from not being able to connect by getting stuck on the connecting at different percentages, name shown on app displays the symbol & or a dot but never the actual name given to the device. On the few times we can actually log through the app it only gives us the current status of the mppt but never displays the 30 day history or shows the drop down menu for settings etc.
We monitor the MPPT via the VE.Direct 1 port on the color control
Currently installed firmware version v1.46