How to increase maximum file size allowed for upload in clipbucket


my probleme is i can’t increase the POST MAX SIZE and UPLOAD MAX FILESIZE and
MEMORY LIMIT and MAX EXECUTION TIME i wnat to insrease this file options
but i can’t can you help me please please i’m using for host eb2a with it’s free hosting service please help me i can’t
acceses to the php.ini file please help me what i need to do and thank you very much