Bad services

Good day I purchased an ebook 2 days ago. I received communication with the token number and Instructions. I did that and it stated token invalid. I emailed back and they gave me another link. Followed that and it still stated invalid. Sent back to them advising them of my username. I am not prepared to give my password is that even legit to ask for user log in details. It seems your institute gives used tokens. Not getting any response to my emails and they told me token needs to be redeemed in 7 days. If you are not goinf to help me pls refund me and I will buy from another place