That worked! Thank you so much!
If I uploaded the theme as if it were new, that would override my client’s website, and we would have to start from scratch by building it all over again. I’ll ask my hosting provider how to upload a folder.
Unfortunately, I can’t connect through FileZilla. I’ll enter the IP as the host and then enter the database username and password, but it says “Critical error: Could not connect to server.” I have cPanel, but it won’t allow me to upload entire folders. Every file has to be uploaded individually, and every single folder and subfolder needs to be manually created. There has to be an easier way.