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Just change your main Password,
by this way, all of your keys will be changed.
Your posting key is not stored in steemfollower, you entered it on steemconnect.com.

mahdiyari am not doing very well here and I need some stuff for my business because Nigeria is hard. I need to know how I can get it working so I can be earning

keep writing good and unique posts,
you must spend your time here, on steemit.
if you mean, how to work on steemfollower,
steemfollower is under maintenance,
it will be available in 1 or 2 days.