Moved Site To Another Server, Now Cart Works But Can't Checkout

I just moved whole site from one server to a new WPress Only server (same company) and now the cart works (you can view cart too) but when you click "proceed to checkout" I am getting this fatal error:

Fatal error: Uncaught Error: Call to undefined function mysqli_connect() in /home/username/public_html/cart/sy-inc/functions.core.php:15 Stack trace: #0 /home/username/public_html/cart/sy-main.php(20): dbConnect(Array) #1 /home/username/public_html/cart/index.php(3): require('/home/username/p...') #2 {main} thrown in /home/username/public_html/cart/sy-inc/functions.core.php on line 15

I contacted InMotionHosting support and they said its not on them, to contact the cart developer. The cart worked 100% before the move, and IMH moved the whole site to the new server, so I have no idea what is wrong.

Please help... the cart is totally down right now.

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Something is wrong when you go to httpS on your site. Even on your main website:
https://www.paulalfordphotography.com/

It is loading a different version of PHP. Let your host know that.

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Thanks Tim.
I did, the tech played with somethings, still cant get it to work. I think the old server was set up to http: , then when you get tot he cart and payment it would go to https (if I remember)
I still can't get it working. I just know it worked fine on the old server and now doesnt. He had me install "Really Simple SSL" plugin which I did and ran, didnt help

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It's still a server/hosting issue. Not a coding issue within Sytist. For some reason over httpS it is pulling up an older version of PHP (or something long those lines) which is missing the mysqli_ functions.

https://www.paulalfordphotography.com/cart/client-proofing/

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