> For the complete documentation index, see [llms.txt](https://mumubit-document.gitbook.io/tycoon/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mumubit-document.gitbook.io/tycoon/faq.md).

# FAQ

Q1. User upgraded all the buildings in a city but the game did not proceed with the next new city automatically. How to solve this issue?

It seems the client and server did not sync during the building upgrade process. Some of the building has not been upgraded completely on the server side but marked upgraded on the client side. It is a known bug and we will fix that in the future version. As a workaround, you can kill/restart the app to force client and server sync. 

Q2. User upgraded 1st city and the game did not proceed with the next city. when click the icon below on the UI, it took user to the Shop. How to proceed with the next city?

<div align="left"><figure><img src="/files/TwmREB93JgaapCTWwOfo" alt=""><figcaption></figcaption></figure></div>

The default "Hat" character only can allow you upgrade to the 1st city. In order to upgrade the next city, you need click the above '?' mark and the game will take you to the Shop. You can buy new character by following ["Character Acquisition" ](/tycoon/game-play/character-system/character-acquisition.md)instruction.


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