In 2022, I purchased a domain name from SAV.com for a friend's acquaintance, costing over 1,102 USD. This amount is significant in Vietnam, representing approximately 10 months of wages. Despite advising against such an expensive purchase, my friend proceeded with it.

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The domain was set to expire on December 31, 2023. Unlike standard practice, I received no renewal notification email from SAV.com. Surprisingly, even after the expiration date, the website remained accessible, which prevented me from realizing the domain had expired.
On February 1, 2025, the website suddenly became inaccessible. Upon checking, I found the domain had expired but could still log in to renew it. I completed the renewal process successfully:

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However, by February 11, 2025, the website was again inaccessible. I discovered the DNS had reverted to default settings (I use Cloudflare), and I could no longer manage the domain. After contacting SAV.com's support via ticket, they informed me that the domain had been successfully auctioned to another buyer:

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During a live chat, SAV.com revealed their policy: expired domains remain accessible for 30 days, during which they conduct auctions. After this period, they sell the domain to other parties without proper notification to the original owner.
Key issues with SAV.com's practices:

They do not send domain expiration reminder emails
Websites remain accessible after domain expiration, masking the expired status

They auction domains after 30 days without clearly informing the original owner
Their practices appear designed to seize and resell valuable domains

Warning: Based on this experience, I strongly advise against using SAV.com for domain registration to avoid similar issues.