machine won't connect to the app, stuck on 'connecting to wi-fi' then fails. router is fine.

Diagnosis

The De'Longhi Dinamica Plus ECAM37095TI utilizes a legacy Wi-Fi module that is strictly compatible with 2.4GHz frequency bands. The "connecting to wi-fi" hang occurs because the machine is attempting a handshake with a router that is either broadcasting a "Smart Connect" unified SSID (where 2.4GHz and 5GHz share the same name) or is broadcasting exclusively in 5GHz. When the machine detects a combined signal, it often fails to negotiate the lower frequency, resulting in a timeout error. Furthermore, this failure is frequently caused by WPA3 security protocols. Many modern routers default to WPA3 or a "WPA2/WPA3 Mixed" mode. The ECAM37095TI hardware often struggles with the newer WPA3 handshake, leading to a loop where the machine sees the network but cannot authenticate the credentials, eventually timing out and returning to the main screen without a connection.

How to Fix It

To resolve the connectivity loop, you must isolate the 2.4GHz band and ensure the security protocol is compatible. Follow these exact steps:

1. Access your router's admin panel via a web browser (usually 192.168.0.1 or 192.168.1.1).
2. Navigate to Wireless Settings and locate the "Smart Connect" or "Band Steering" toggle. Turn this OFF.
3. Manually rename your SSIDs. For example, change "Home_Wifi" to "Home_Wifi_2.4" and "Home_Wifi_5". This forces the machine to target the correct frequency.
4. In the Security settings, change the encryption mode from "WPA3" or "Mixed" to WPA2-PSK (AES).
5. Save settings and restart the router.
6. On your smartphone, go to Wi-Fi settings and "Forget" all previous versions of your home network.
7. Connect your phone specifically to the "Home_Wifi_2.4" network.
8. Open the Coffee Link app, enter the pairing mode on the ECAM37095TI display, and follow the on-screen prompts to link the machine to the 2.4GHz SSID.

If That Didn't Work

• Disable VPN and Private DNS: If you have a VPN (like NordVPN or ExpressVPN) or a custom DNS (like AdGuard) active on your phone, the app will fail to communicate with the machine during the initial handshake. Disable all VPNs and set your DNS to "Automatic" before attempting the pairing process again.
• Check Firewall/MAC Filtering: Ensure your router does not have MAC address filtering enabled. If it does, you will need to find the MAC address of the machine (usually located on a sticker inside the bean hopper area or on the back of the unit) and whitelist it in your router's security tab.
• Reset the Network Module: Perform a hard power cycle. Unplug the ECAM37095TI from the wall outlet for exactly 60 seconds. This clears the temporary cache of the internal Wi-Fi chip and forces a fresh search for available access points.
• Distance and Interference: If the machine is placed directly next to a microwave or a high-powered cordless phone base, signal interference can cause the "connecting" hang. Move the machine 3 feet away from other electronic appliances to see if the connection stabilizes.

Heads Up

• Avoid using special characters (like !, @, #, or spaces) in your Wi-Fi password; the Dinamica Plus module prefers alphanumeric characters and may fail to authenticate complex symbols.
• Keep the Coffee Link app updated to the latest version via the App Store or Google Play, as De'Longhi frequently releases patches for connectivity bugs.
• If you change your router or Wi-Fi password in the future, you must perform a full "Network Reset" on the machine's display settings before the app will recognize the new credentials.
• Be aware that if your router is located more than 20 feet away or separated by thick masonry walls, the 2.4GHz signal may be too weak for the machine's internal antenna, requiring a Wi-Fi extender.