Hi,
I’m having my first go at Setup Wizard Import.
I’m running BPS Pro 15.3, but I got the same two errors as the OP.
I was able to fix the first one by activating Master htaccess Folder BulletProof Mode (MBM).
However activating BPS Backup Folder BulletProof Mode (BBM) is not fixing the second one (Error: Unable to create or update File /…/public_html/wp-content/bps-backup/master-backups/.htaccess). I’ve run the Pre-install Wizard/Setup Wizard twice and still no joy.