Changing Servers

I have an Opigno Project 7-x-1.27 that uses Drupal 7.56 installed on a shared LAMP server. What is the correct procedure for moving an Opigno site to a new server? I am quite experienced using Drupal 7 and Drupal 8 sites on shared servers, and have moved Drupal sites many times, but the same procedure doesn't appear to work for the Opigno project. Create new database on new server, and import database from old server. Copy all the files from old server to new server and change the database and dbase user info. Have all the files and database backed up, but can't install the site either on my local development server or on the new live server. What am I missing.