Can't access /wp-admin after switching MU folders to subdomains

Hi there heroes!

I need some help here, I'm a little in panic. I'm trying to switch from Sub-Directories to Sub-Domains on our WPMU Network, and I've been following this steps at https://premium.wpmudev.org/blog/change-wordpress-multisite-to-sub-directories-sub-domains/

Unfortunately, after deleting all tables from PHP MyAdmin, I can't access our website or /wp-admin. It keeps redirecting me to http://cloudstore.pt/wp-signup.php?new=cloudstore.pt

I have made backups in Snapshot, but since I can't login at wp-admin, I can't recover them.

I'm really lost here, not sure what I could do to restore this now. We have put a lot of effort configuring that network, it would be a huge pain in the ass if I missed everything. :slight_frown:

Could you guys give me some help? Thank you VERY much!