We thank John Carter for providing the following information:
Things have recently changed at the library. In order to access the Internet at the library, you need to do the following on the iPad, iPhone, or laptop:
1. Open Settings.
2. Click on Wi-Fi.
3. Click on the blue right-pointing arrow at the far right of the PPL entry.
4. In the HTTP Proxy section, click on the Auto tab.
5. Close that window and quit Settings.
You are now ready to get on the Internet at the library.