Sharon -
With all due respect to some of the posters on this thread, much of what was written is speculation and not accurate information. Please read below.
"Waiting for connection" will be displayed when the iAqualink jbox is trying to connect with your router. If your Aqualink RS power center is in Service or Timeout Mode, you will see "No Operations Allowed Here" displayed instead of "Waiting for connection.
Your router DOES need to be broadcasting on 802.11B. Jandy iAqualinks do not currently support A/G/N routers. If you have a router broadcasting to anything other than B, that router may be backwards compatible with B and will need to be put into "mixed mode" to multi-cast appropriately.
The fact that you had a connection previously tells me that the router you had was compatible, broadcasting on 802.11 B and had dymanic host configuration protocol enabled. The issue, then, is not the iAqualink jbox, but the connection between the iAqualink and router. If your iAqualink jbox is located near any motors or there are several walls between the jbox and the router, you may not be able to connect. Also, if you have a lot of traffic on your router, you may intermittently see "Waiting for connection" as the router is sending and processing other information.
It is always recommended to hook these iAqualinks up with an ethernet cable whenever possible. You will no longer see "Waiting for connection" and the connection will be instantaneous. If that is not an option, you may consider using a range extender for your router, or setting up a wireless access point.
When you hook up the iAqualink with the new router, you will need to run the setup tool again. Remove the RS485 connection from the front board in your power center and plug it in to your computer with a USB connection. Make sure it's in WiFi mode inside the jbox. Setup tool should pop up automatically. When it does, run it and be sure to enter your SSID (may have changed with a new router) and password carefully as these are case-sensitive. Let iAqualink choose the security type. When setup tool is complete, reconnect the iAqualink to your front board at the power center. The red light will light up instantly. Yellow light should begin to flicker and become solid. When it does, you should see the green light flickering slowly. It will turn solid and you will be connected so long as you have no firewalls blocking the iAqualink, you are broadcasting to 802.11B on 2.4ghz and DHCP is enabled. Keep in mind that you have a new router and because of this, the settings you had previously are not saved meaning your router settings may need to be changed in order to be suitable for iAqualink to connect.