Was your other post deleted? I answered your question on that topic, not sure what happened!!
You need to use a username and not a wallet address, that user name needs to be in your db, I looked into the table name and I forgot it, but there will be user/worker database table, the worker name needs to match with one of the rows in there, only then it will show alive.
As far as connecting that to your wallet, you have to know that you are now running your own pool, so you need to find a block to get any rewards, search the code and you will find "genesis transaction" that's where your wallet address goes to.
May I ask what are you trying to achieve by running your own copy of btc.com?
I found this issue how to insert user in db for testing backend, you can check here:
https://github.com/btccom/btcpool/issues/16And still doesn't work. I don't know how to insert username in db on the another way?