Multi-Factor Authentication (MFA) in Plesk declines one-time password that was sent to the mobile phone

1. Check what is the current time for your time zone using any public resources, for example, worldtimeserver.com:
   

2. Compare it with the current server time in Plesk > Tools & Settings > System Time. If it is different, correct it in Plesk > Tools & Settings > System Time.

3. Make sure that the local time and the timezone on the server match those on the mobile device.

Note: If the time does not change via Plesk UI, the server time need to change directly from the server:

For Windows check the following article How to configure an authoritative time server in Windows Server

For Linux:

1. Log in to the server over SSH:

   Note: if direct SSH access to the server is not possible, contact server administrator for further assistance.

2. Disable NTP:

   # timedatectl set-ntp false

3.  Change the timezone Hour/mionites/seconds:

   # timedatectl set-time HH:MM:SS

4.  Enable ntp:

   # timedatectl set-ntp true

1. Log in to the server over SSH or RDP

   Note: if direct SSH/RDP access to the server is not possible, contact server administrator for further assistance.

2. Disable the extension:

   # plesk bin extension --disable mfa

3. Enable it back:

   # plesk bin extension --enable mfa