Hello Alex, thanks a lot for your effort, but I'm sorry, it's not the solution for my 'problem'.
Both, my telephone and tablet are on the same wifi connection with the same settings. After the latest wordfeud-update the telephone worked fine, but the tablet has this problem and never had it before.
So maybe there is another solution? It's ennoying when someone chats something and I don't answer because the text didn't arrive on the tablet. Or much later......
Thanks if you can help me. regards, Annelies