We looked at subscriptions.prod.hydrow-external.net, a subdomain that appears to be part of Hydrow's external infrastructure. The main takeaway: this isn't a normal website. It doesn't load a homepage, have any branding, or offer a way to contact anyone. The site returns a 404 error, which means it's not serving its intended purpose right now, if ever.
For an infrastructure endpoint, absences like no privacy policy or about page are expected. What matters more is whether the service works, and here it clearly doesn't. The domain has a valid SSL certificate and isn't blacklisted, but a URL that leads to an error page can't be trusted for any real use.
If you're looking to manage a subscription or interact with Hydrow, double-check that you have the right address. A non-functional site is not necessarily a scam, but it's a strong sign that this URL isn't ready for customers. Our advice: stick to official Hydrow pages for any account-related tasks. There are no subscriptions.prod.hydrow-external.net reviews because there's nothing to review.