Yes, the guild initiation quest is currently the last piece of released content. The city is mostly empty, except for the poker game at Cat's Tail. To access it, click on the cat head icon on the city map. Can you do this on a mobile device? I must admit that I don't know how Joiplay works.
In the PC version, you can hide the text box and display the image below by pressing the "H" key. After searching online, I found this:
Virtual Buttons: Tap the arrow at the top of the screen to open the JoiPlay menu, then select Settings to add a virtual button mapped to the "H" key. Another option is to use an onscreen keyboard.
If neither of these works, I'll try adding a hide button in the next update.