Chirpstack V4.3, the gateway receives the network access request but does not have any reply

Hi, everyone。
After installing 4.3, I configured my gateway correctly on the web, but it only received network access requests from nodes without any replies. Previously, I worked fine on the latest V3 version. I don’t know why. I hope someone can help me.

The dev keys or app keys may be gone during the upgrade?

Could be that you’re missing keys so not able to accept the join, it could also be that you have the wrong MQTT topics on the gateway bridge

Thank you, but for a novice like me, I wonder what should I do

My connection with ABP is perfect, but the OTAA connection never replies.

Thank you very much, the problem is solved, because I made a mistake in the DEVEUI of the node

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