Can’t connect to network in Mozambique

I updated my iOS software whilst in a hotel in Mozambique a few days ago over the hotel WiFi now I can’t access my EE network at all. EE has assured me that my roaming is activated and I should be able to connect to the local network here which is MOZ-mCel, but when I try to connect nothing happens. When I arrived in Mozambique over a week ago my phone was connected to the above network, but since updating my software it won’t let me connect now. Any suggestions would be greatly appreciated.