RN214 trying to launch PHPMyAdmin #1045 Cannot log in to MySQL server

Hi

I have installed MySQL server and phpmyadmin on my RN214 running latest 6.10.2 - when i launch phpmyadmin i get  #1045 Cannot log in to MySQL server - I am using UN root and PW blank, i have tried the nas UN & PW but that dont work either

should i be doing something else to log in?

Thanks