Hey @developer12! I'm checking the relayer on the Defender account registered with your same email address as in the forum. I see txs from the 5th were replaced due to expired time-to-live, caused by a partial outage on our end, but every tx after that was processed.
Note that creating new API keys or pausing/unpausing the relayer won't affect transaction resubmission. Defender will automatically keep retrying them based on the pricing policy. And please keep us posted if you experience this again!