Hello, welcome.
The keys you got from esteem are pretty important because they're your first keys. We call them the owner keys.
However, to be able to login to peakd or hive.blog, you need to get the posting key. We did it that way for your safety.
So, keep your owner key stored and safe, get the posting key and use that to login. Get the master key and active keys as well. You'll understand when you read the welcome guide. I'll put the link below:
Thanks for your reply. These links did help me a lot.
You're welcome