Can you somehow send me a copy of the db connections? It’s not a must.
If you take a look you might see that the db connections (username, password, etc) are incorrect.
I am not an expert, but pulling blank pages sounds like the database to me. To troubleshoot more, check the different PHP files (wp-login.php, etc..).
OR do a new local install of WordPress, on a fresh new db, and see if that pulls up blank pages.
I just did that before I wrote this, so I can “follow along” with you.