I have an iPhone 5s. Just like the title said, whenever my iPhone or iPad is connected to Wi-Fi I can't connect to some games like Puzzle and Dragon even though I can browse using Safari, use Facebook, Twitter, Instagram just fine. I keep getting connection error (in the game of course) whenever I open that game (not only that game actually).
I've tried changing the DNS from the default 192.168.1.1 to Google's and resetting the cache (airplane mode -> on -> off). But to no avail.
Have tried to open the game on my father's iPhone and iPad, and my sister's iPhone too. I suspect the problem is that my Wi-Fi configuration isn't compatible with iOS(?).
While my iPhone can't, my friend's Android can play the game just fine using my home's Wi-Fi network.
Please help me fix this.