Diablo II Resurrected - Battle.net connection problem

Today I downloaded the beta of Diablo II Resurrected on the PS4 platform. On PSStore it was available for free to download.
Finally, the game was downloaded in my console, but if I try to run it, I get a warning about Battle.net connection problems. It's surprising, because I have connected the PSN account with Battle.net.

Is it any bug with the beta version of the game or it has to be purchase and this is the reason of connection's fail?

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Why do I keep getting disconnected from Diablo 2 resurrected?

This error may occur when trying connect to Battle.net after a fresh Diablo II install. To fix this problem, close the game, right-click on the Diablo II icon, then select Run as administrator. Alternatively, download and run the latest patch here to update Diablo II to the latest version manually.

Does Battle.net still work for Diablo 2?

Battle.net is supported for Diablo, StarCraft, Diablo II, WarCraft II Battle.net Edition, WarCraft III, StarCraft II and Diablo III including expansions, except the Hellfire expansion for Diablo I.

How do you fix connection interrupted in Diablo 2?

Can you Fix the Connection Interrupted issue in Diablo 2 Resurrected?

Plug in your computer into your modem directly.

Close any other programs or applications that use the internet.

If nothing works, try getting a more stable connection.

Diablo 2 Resurrected Beta Ps4 Battle.net connection issues?

Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

Images: Yan Krukov, Andrea Piacquadio, Andrea Piacquadio, Andrea Piacquadio