Why does my Meadowbrook iPad not log into the Meadowbrook wifi anymore?

The new Private Address feature is getting in the way.

Open your Settings App

Select the Wi-Fi section

Tap on the Information icon next to the Meadowbrook network option

Slide off the Private Address option
Turning off Private Address can automatically turn off the Auto-Join feature. Be sure this is still enabled.

If you enabled the Guest network, be sure to tap the information icon next to the Guest network and select the "Forget This Network" to avoid the device logging into the Guest network.