Block a user
feat: add sendEmailReport method to InvoiceService and corresponding route
feat: add required fields for signing city and signature to subscription process
feat: add required fields for signing city and signature to subscription process
feat: add required fields for signing city and signature to subscription process
refactor: remove local QR data URI caching and streamline QR code retrieval
refactor: remove local QR data URI caching and streamline QR code retrieval