not commenting and following user

hey thanks for this amazing tool.
but i'm facing some problem this is not following or comenting on the posts.
and i don't know either it's my fault or something else
this is my code below please help

from instapy import InstaPy

session = InstaPy(username='XXXX', password='XXX', headless_browser=True)
session.login()
session.like_by_tags(["pcsetup"],amount=100)
session.set_do_follow(True,percentage=100)
session.set_do_comment(enabled=True, percentage=80)
session.set_comments([
u'What an amazing setup! :heart_eyes: What do '
u'you think of my recent setup?',
u'What an amazing desk setup! :heart_eyes: I think '
u'you might also like mine. :wink:',
u'Wonderful!! :heart_eyes: Would be awesome if '
u'you would checkout my photos as well!',
u'Wonderful!! :heart_eyes: I would be honored '
u'if you would checkout my desk setups and tell me '
u'what you think. :wink:',
u'This is awesome!! :heart_eyes: Any feedback '
u'for my posts? :wink:',
u'This is awesome!! :heart_eyes: maybe you '
u'like my desk setups, too? :wink:',
u'I really like the way you do the whole setup . I '
u'bet you like my desk setups, too :wink:',
u'Great capture!! :smiley: Any feedback for my '
u'recent shot? :wink:'],
media='Photo')

session.end()