Move submission error message

I have what appears to have a good roaming internet connection, but when I submit a move, it fails with an submission error message, then the game screen closes then reappears with the same game which now accepts the move. The next game expecting a move then appears and the same sequence happens and the next game and so on. I can live with this but I have just completed a game and accepted removed stones. My name has a tick against it but it still appears to be awaiting a response from me. The automatic refresh number which has been happening on the move submissions outlined above doesn’t happen with this one. Any ideas? Could it be something caused by the roaming signal? It happens on Chrome and Firefox Android 13.