Authenticating to Oracle REST data services as admin
ok, so i found a solution, seing how apparently my default admin password got messed up

i ran a ' find /oracle/ -iname 'apxchpwd.sql' Search command

once i got the location of the file, i logged in sqlplus as sysdba, then ran @[complete_apxchpwd.sql_path] got prompted for the new password, typed it in, and voila