My Felicity Battery works fine with BMS with my Growatt inverter, I have the same setup you provided.Hello Elia, I think I know your problem.
There is a cable you need to connect between the inverter and the battery.
The black cable that comes with the battery won't work. This is meant for connecting batteries in parallel.
You need to make a custom network cable. 1 side pins 1&2 connected. The other side Pins 5&6 connected.
Plug the 1&2 side in the growatt bms. and plug the other side in the battery. Should work after 10 seconds.
Also make sure all SW pins are 0 in your case since you have 1 battery
However, when the battery reaches the cutoff percentage at night the inverter powers down, but in the morning the inverter doesn't power back up and doesn't start charging the battery or providing power. I have to manually turn off and on the inverter for it to start working. I also installed the PV wake up wire to the battery with no success.
Any idea how to solve this issue?