Once customers purchase the package from the Salesforce Account Executive, they'll have a URL installation link in the subscription order form for those users who bought the Salesforce Backup Managed package. The following link is a workaround if the purchased URL link has flaws: https://www.sfdc.co/Backup_Restore
Note:
Post purchase, to install the package, users need to have 'Modify All Data' and 'System Administrator' permissions. After installing the package, users need to have the 'Backup and Restore User Permission Set' License assigned, which they only get after purchasing the license mentioned above.
Install the Salesforce Backup Managed Package
URL:- https://help.salesforce.com/s/articleView?id=sf.backup_restore_install.htm&type=5
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Assign the Salesforce Backup License and Permission Set
URL:- https://help.salesforce.com/s/articleView?id=sf.backup_restore_permissions.htm&type=5
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Configure Salesforce Backup Settings
URL:- https://help.salesforce.com/s/articleView?id=sf.backup_restore_provision.htm&type=5
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Package details
URL:- https://help.salesforce.com/s/articleView?id=000389758&type=1
000389758

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