Setup and customization of Blockscout - EXPERT HELP NEEDED!

We have been trying for a long time to customize Blockscout for a new Ethereum Based project. Unfortunately we never managed to customize it as anytime we tried to edit the files (css, templates, coin name, header, footer) the web assets compilation failed.
If there is anyone who can help us create a stable setup and customize it we would be thankful.
We are willing to pay for any services needed.