Meross MSS310 hostname

I have 4 Meross MSS310 smart plugs and they work well. Only thing is that they all show up in my dhcp having the same hostname; Meross.
I have them integrated with the Meross Custom and Lan Only integration. Does anybody know how to set the hostname? I’ve tried setting a name in the integration but nothing changed. There’s no option on the pairing web interface either.