@chasbick
This is actually a common situation when replacing mesh systems, especially with IoT/smart devices. Here are some troubleshooting steps that should help get your devices reconnected without having to reconfigure each one individually:
First, try these general steps:
1) In the Deco app, go to MORE > Wi-Fi settings and double-check your SSID and password. Make sure there are no extra spaces at the beginning or end of the password that might differ from your old network.
2) Go to MORE > ECO Mode (if available) and ensure that ECO Mode is turned off, as this can affect device connectivity.
3) Try rebooting the main Deco unit.
For your IoT/smart devices specifically (cameras, smart plugs, speakers):
1) Go to Deco APP > MORE > IoT network and enable the IoT network. Try connecting your smart devices to this dedicated IoT network instead. This network is optimized for 2.4GHz-only devices.
2) Go to Deco APP > MORE > Wi-Fi Backhaul Mode and switch it to 'High Capacity'. This would greatly improve 2.4GHz congestion, which is crucial for IoT devices.
3) Double-check your Wi-Fi SSID and password • avoid using special characters such as spaces, hash/pound signs (#), dollar signs ($), slashes (/ or \), percent signs (%), asterisks (*), at symbols (@), ampersands (&), brackets (parentheses (), square brackets [], or curly braces {}), non-English quotation marks, or any non-English letters or numbers. If your old network had any of these, consider simplifying the credentials.
For specific devices that still won't connect:
1) Go to Deco APP > MORE > Access Control (Allow List or Block List) and check if any devices are mistakenly blocked.
2) Go to Deco APP > Client List (in the offline client list), find the specific device (if it exists), and delete it. This will remove its old connection preference settings.
3) Go to Deco APP > MORE > Advanced > Fast Roaming and disable it.
4) Try changing the main network encryption method to WPA2/WPA-PSK in MORE > Wi-Fi settings, as some older IoT devices may have compatibility issues with WPA3.
If you're still experiencing issues after trying these steps, you can find more detailed guidance here: https://www.tp-link.com/support/faq/2718/
