Hello,
It seems that this question is more WordPress related and not our support scope. You need to reinstall everything again. You can read these useful articles before migration here.
https://wordpress.org/support/article/moving-wordpress/
https://www.wpbeginner.com/showcase/best-wordpress-migration-plugins-compared/
https://www.wpexplorer.com/migrating-wordpress-website/
As for our theme there is no special instruction for transfer. Just keep all files and it will work correctly.
Kind Regards
