When you replace an AcuRite Access or PC Connect Display, its linked sensors are transferred to the new device.
AcuRite Access - be sure it's powered on and connected to your network (Internet) router. At a minimum, be sure there is one AcuRite sensor in wireless range of the AcuRite Access.
PC Connect Display - verify the Indoor Display is connected to your computer, the computer is on and has an Internet connection, and My AcuRite Sharing is enabled from the PC Connect software.
Open PC Connect 2.0.4 Software to confirm under Status shows the following:
MyAcuRite.com: How to replace an AcuRite Access or PC Connect Display
From the menu, select Settings > Devices.
From the AcuRite Access or PC Connect Display you are replacing, select Replace.
Enter the 12-character Device ID of the new device.
Select Save to replace the device.