Limits and risks of a DA boost
DA is a third party metric from Moz. It is not a Google ranking factor, and a higher DA does not by itself raise rankings or traffic.
Moz recalculates DA on its own schedule and the number can change or drop at any time. The only protection is the 30 day free refill: if the DA you bought drops below the purchased level within 30 days of delivery, we redo it for free. It is a service term, never a guarantee.
Redirect based links can look unnatural to Google. No vendor can promise they carry no risk for any monetisation programme, and the buyer takes that risk. Use the service for your own tracking and reports, and not to sell a site at a higher price, to mislead a client or a buyer, or as proof of organic authority.

