SD Card Recovery

Data Rescue by Prosoft should be able to recover anything that has not been written over since reformatting.

https://www.prosofteng.com

Prosoft allows you to find files prior to paying for recovery.  It's available for macOS or Windows.

You'll need to have storage that's the same capacity or larger than what you're recovering.  So, if you're running Data Rescue on a 512GB drive that was almost full, be sure to have 512GB of stroage available for the recovery process.

The end result are all of what it finds in folders based on file type.  

Since you have not written any new data, you stand a good chance of getting everything, or at least almost everything.

There are computer programs that sometimes work to recover a deleted file, but I have never heard of a program to recover ANYTHING when a drive is formatted... since formating wipes out the table of contents that points to file names & locations

Have you asked Sandisk if they have a tool?