There are a couple of issues that I could notice after migration:
1) Automatic Backup on the hosting side is not working properly when a new backup was started and I got anomalies.
2) Was having issues with creating FTP user, but got it fixed later.
3) Tried switching to Multisite via WPMU DEV Manage Hosting via “Tools” tab, but had to manually add the codes to the wp-config.php file.
4) Managed Backup not working in the site at the moment, getting 504 error.
Would appreciate, if you guys could check, and see whether the server is working fine or whether the site needs to be migrated again. Please check chat notes for more info.