This article addresses the issue of the Bitmain Antminer S19 Series not being able to connect to the mining pool.
Failure phenomenon: Both the network status and the mining pool status are abnormal.

Failure causes and treatment methods:
- Mining machine configuration problems
Look for mistakes, such as spaces or symbols with a full or half angle, in the worker name of the mining pool. Additionally, you can reset it and restore it to factory settings. - Mining machine control board abnormal
You can try flashing a SD card or changing the control board. - Network abnormality
In general, the mining farm’s LAN has restrictions, a disabled port, a DNS configuration error, etc. You can only try to contact the network operator to ask them to remove the restriction if the port has been restricted by the operator of the network. In this case, you can still access the Internet but cannot mine. - Abnormal mining pool
It might be the mining pool, replace the mining pool, or contact the relevant mining pool customer service to solve if network issues and mining machine configuration issues are excluded.
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