Instable or no WLAN at all?
With these adapters you can operate AbaClock via a network cable and do not need a functioning WLAN connection. You will need a network connection.
USB Ethernet adapter:
The Apple USB Ethernet adapter is a one-piece external adapter that connects to the USB 2.0 port of the older MacBook Air to provide a 10/100BASE-T Ethernet port. Connect your Ethernet cable to the RJ-45 connector of the adapter - no external power supply is required. The adapter is small, easy to install and even easier to use.
Lightning to USB 3 adapter:
Lightning to USB 3 camera adapter makes it easy to transfer photos and videos from your high-resolution digital camera to your iPad Pro. After connecting the Lightning to USB 3 camera adapter, iPad Pro automatically opens the Photos app. It lets you choose which photos and videos you want to import, and then organizes them into albums.