I can't choose Allow in the authentication to log into the app

1. Make sure the time on the device is set up to be automatic.

For  iOS devices: Settings > General > Date & Time. Enable Set Automatically.

For Android devices: Settings > General management > Date and time. Disable and enable Automatic date and time.

To check that the device time is in sync, open a browser on the phone and go to https://time.is

2. Reset your 2-factor authentication.

There is a self-service option to reset your two-factor authentication at https://app.ecostruxureit.com/mfa-reset/

See How to reset two-factor authentication (2FA)

OR

An Administrator in your organization can reset your 2-factor authentication. The administrator will:

1. Log into the EcoStruxure IT web site.
2. Click Administration > Users tab.
3. Find and click the user requesting the authentication reset.
4. Click Reset 2FA... and then Yes to confirm.

After the administrator resets your 2-factor authentication method, you can log in to set up authentication again.