please!!! radius server not responding

i have configured my radius server correctly i believe and yet its still says radius servers not responding

what radius server are you using? user-manager or Freeradius? if it is freeradius, have you check the Logs on the radius server and the logs on the Mikrotik RB? are requests getting to the radius from the RB? it will be nice if you share more details. Some slight misconfigurations could cause this!