Source: MMOWTS
The cause of the Diablo 2 Resurrected server issues has been discovered by Blizzard devs, although it uses modern technology since it was released in September, it has faced the issue of server instability, and this issue has not been fixed so far.
Diablo 2 Resurrected was widely acclaimed once it was released, successfully recreating the gameplay and division of Blizzard’s classic 2000 game. However, the stability issues of the remaster caused many gameplays to be unable to enjoy the game. The instability of the server caused some issues, such as when you tried to load a saved game, the character was suddenly deleted. Server outages also make it impossible for you to play online games with other players. These server issues all affect Diablo 2 Resurrected.
In a post on the developer's official forums, Blizzard revealed the root of server issues with D2 Resurrected. Different issues have led to continuous results, and Blizzard plans to solve them one by one. The surge in server traffic on October 9th, coupled with the update released the day before, overwhelmed Blizzard's global servers and caused downtime. Legacy code reused from the original version of Diablo 2 is also one of the reasons for server instability.
Although D2 Resurrected was released not long ago, the game balance and item system are the same as in 2000. This creates a unique sense of nostalgia and novelty, allowing fans to experience the game in a whole new way. However, this commitment to retaining the original Diablo 2 parts caused problems with Resurrected and legacy code.
So far, the game has been at a standstill due to unstable server performance. Since the game release, the disappearing characters and the inability to play games online have disrupted the gaming experience of many players. Although these problems continue, Blizzard has discovered the root cause of the issue. So shortly, they should release some effective patches. If you want to get a better gaming experience in the game, it will be helpful to buy D2 Resurrected Items directly from MMOWTS, because you can find any items you need in the game here, and the most popular one should be D2 Resurrected Rune, if you need it, you can come to MMOWTS at any time to get the corresponding resource help.