PROBLEM SOLVED.
Hi there, yes, I have the pro version. I’m coming back here to support the plugin. I was getting the 403 error and other issues because I needed to enable the option “Download via PHP”.
I don’t know why it happens with all my sites, but maybe it’s something related to my hosting or theme.
Anyway, I’m pretty happy with BackupGuard, and I’ll make sure I leave a nice review.
Thank you!