Reply To: ESP32 setup portal doesn’t pop up on phones, and how do 30 units get their own token?

WiFiManager falls back to the portal again if it can’t join, that part’s handled.

For the credential, one shared token is worse than wrong. Hermetry allows one session per device, so 30 boards on one token keep throwing each other off. Use the profile’s provisioning instead. You flash the same firmware with the profile’s provisioning key and secret, and each board asks for its own credential on first start:

// first boot only, after Wi-Fi is up
// MQTT connect: username "provision", empty password, TLS
subscribe("v1/provision/res");
publish("v1/provision/req",
  "{"deviceName":"logger-" + chipId + "","
  ""provisionDeviceKey":"pk_...","provisionDeviceSecret":"ps_..."}");
// answer: {"status":"SUCCESS","credentialsType":"ACCESS_TOKEN","credentialsValue":"..."}
// store credentialsValue in NVS, reconnect with it, never provision again

On the profile’s Provisioning tab you pick a strategy. With Allow creating new devices, each new board lands in quarantine and its data is dropped until an admin activates it. With Only pre-provisioned devices you create logger-<chipId> names beforehand from your 30 boards, and a leaked key can’t add strangers. For 30 units I’d pre-create them. Hermetry never re-issues a credential for an existing name, so keep the token safe in NVS. Details on Adding and claiming devices.