And just to be sure: you should not do an OTAA join for each uplink, if that’s what you’re doing. See How often should a node do an OTAA Join, and is OTAA better than ABP? and OTAA best practice: how to not join every time?
And just to be sure: you should not do an OTAA join for each uplink, if that’s what you’re doing. See How often should a node do an OTAA Join, and is OTAA better than ABP? and OTAA best practice: how to not join every time?