Moving Backlight 5 to new host

Greetings. I had my new host, Ionos, migrate from my previous host, my folder with all the galleries and backlight 5 files to a folder they created for me. The domain name takes 7 days before we can link it to my new Ionos folder.
He set up a temporary link to my Backlight, but the site doesn’t seem to be working. Is there something I should update with the new host, eg; index php, .htaccess, or whatever? The tech mentioned that installation of Backlight 5 into the old host may have created something specific to that host?

I noticed that in the previous host backlight folder a .htaccess but in the new folder, two of them.
The original and a second.

He won’t be back in to work until Monday, but if I could get some info for him, I’d appreciate it. I can’t seem to find the email with the temporary domain and it’s not listed on Ionos’s domain control panel. Otherwise, I’d send along the link. No error message that I can remember.

There should be a .htaccess file in the backlight/ folder. There is also one in the root of the site. It’s alongside the index.php file and the galleries/ and backlight/ folders. These are two different .htaccess files and they need to stay in their original locations.

Yep, no .htaccess file in the root folder of the new host. Is that something I can create or did Backlight create that? Can I import the old one from the previous root to the new root or does it need to be recreated?
Thanks, Rod

the ,htaccess file is part of the installation download
https://backlight.me/docs/installation#step-1-unzip-and-upload