[XB] User Upgrade Shared 1.0.0

Allow users to share their user upgrades with other members.

This add-on enables selected user upgrades to be gifted or shared with other users, making it easy to grant upgrade benefits to friends, team members, or community members.

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Features:​

• Upgrade Sharing: Allow users to share selected user upgrades with others.
• Instant Activation: Shared upgrades are activated immediately for existing registered users.
• Invitation System: Unregistered users receive an email invitation to claim the shared upgrade after registration.
• Permissions & Limits: Control upgrade sharing and sharing limits through user group permissions.
• Invitation Management: Users can view and delete pending invitations that have not yet been accepted.
• No Resharing: Users who received a shared upgrade cannot share it again.
• User Criteria Support: New user criteria for shared and received upgrades.

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Useful for:​

• Community Rewards: Let members gift upgrades to others.
• Team Access: Share premium features with staff or collaborators.
• Membership Programs: Encourage upgrade purchases through gifting options.
• Automation: Use shared upgrade criteria in promotions and permissions.

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Screenshots:​