William S.
Good Website, Horrible Uptime & Responsiveness
I've been using the website for a while now. I have zero complaints about the website itself, but the servers SellAuth runs on are horrible.. like horrible. Throughout the day you can expect slow response times. Sometimes it'll genuinely go down for an hour, which is a lot of lost revenue to big sellers. They're always gonna pull the excuse that it happens and that it's technology, which is true, but there has to be an underlying issue that they won't discuss. It's either a critical level bug, or, they just need to spend more money on a server lol. Not to mention that no other competitors have this issue, i.e Billgang, SellHub, both SellSN and Sellix didn't have this issue either. It's purely unique to SellAuth which is why I don't care about their stupid excuse. Nonetheless, the site is good, but expect downtime and horrible performance. Lots of pros, little cons to the site. Not gonna be bias just because of the downtime, hence why I'm giving a 3 star review. It's a big piece of it, and it surely sucks when you're trying to set up your shop or do major revamps, but they have a lot of good development that slightly acts as a counterweight.
Response from SellAuthFeb 24, 2026
Thank you for taking the time to leave such a detailed and honest review. We genuinely appreciate balanced feedback like this. First, we want to address the downtime concerns directly. The recent uptime and performance issues were caused by a large-scale DDoS attack, not underlying server limitations or ignored infrastructure problems. These types of attacks are unfortunately something many platforms face, and while technology is never 100% immune, we’ve been actively strengthening our mitigation systems and infrastructure to reduce the impact and prevent similar disruptions moving forward. We completely understand how frustrating downtime can be especially for larger sellers where even short interruptions can mean lost revenue. That’s not something we take lightly. Significant upgrades and additional protections have already been implemented to improve stability and responsiveness. We also appreciate you acknowledging the platform’s development and features despite the issues. Our goal is continuous improvement, both in features and reliability.




