Smart contracts are running but not responding sometime

There is a case where the tx of a contract request is sent. Maybe due to insufficient fees, , although it has been broadcasted and not confirmed yet, the contract does not return a response. After a period of time, this unconfirmed TX is returned and disappears. In this case, the contract did not react at all.
It appeared twice.

There will not be a response action if there is insufficient fees to pay for a rejection response action. Otherwise there should always be a response action.

Can you please share the Tx-ID’s ?