ok i have been trying for hours for phpmyadmin to work, heres exactly what i did , dont know if its related:
deleted my database usernames , created another username this time i used only 1 letter,
the database username password was the same as my username at zymic , so i put another password.
i set the privilage of the user , then opeend phpminiadmin , then voila! it entered

i hope this helps someone , try using 1 letter as username and do not use the same password as ur zymic account.