Can confirm, this is what I did to enable the online modification of the settings of the 50kW DEYE inverter with the HV battery.
E-mail: service AT deye DOT com DOT cn
Ask them to 1) increase the frequency of the update to every minute and 2) provide them SN of the inverter and Dongle ID with your Solarman Business account e-mail for the following domain https://globalpro.solarmanpv.com/ to they enable the device remote control function.
It can take them a day or so to reply but they will sort you out.
Edit: also check out this setup video: