I found this information on your plugin:
HOW DO I RESTORE A USER ACCOUNT FROM THE BACKUP FILE?
The file is plain text and consists of SQL statements that re-insert the deleted database records, very similar to the backup files that mysqldump creates. (Feel free to open up the backup file in your favorite text editor and take a look!)
So, to simply re-insert all the deleted users from the backup file, you just need to run the file through the mysql command:
mysql your_wp_database < userspamremover.restore.sql
I sent your information above to BlueHost. They sent me the links below:
Generating a Private/Public Key
https://my.bluehost.com/hosting/help/ssh-keygen
SSH Connections
https://my.bluehost.com/hosting/help/301
SSH Access
https://my.bluehost.com/hosting/help/18
I would appreciate someone helping me. I don’t understand how to fix this problem, using your information or using BlueHost’s information.