Registered Alerts but didn't receive alerts when they happened

We registered the alerts below but did not received Flight Aware Events as expected. Would like to know why didn’t get events notifications as we expected ?

Please double check the the values being used to set the alerts. With the exception of 34968873 these alerts did not deliver any results since they did not match a flight. In many cases the origin or destination is slightly off from the route normally operated by the flight number.

34961113 - Alert specified AAL70 KDAL-EDDF, but flight operates KDFW-EDDF.
34968873 - Alert specified VIR513 EGLL-KATL, Flight departed as positon only (dest not known). Arrival alert delivered.
34955057 - Alert specified VIR618 VABB-EGLL, but flight operates VAJJ-EGLL
34968984 - Alert specified VIR618 VABB-EGLL, but flight operates VAJJ-EGLL
34955058 - Alert specified VIR685 EGLL-KATL, but flight operates EGLL-KJFK
34955058 - Alert specified JAL725 on 2020-07-22, but no flight JAL725 was tracked on that (utc) day
34972705 - Alert specified UAL1085 MMMX-KSFO, but flight operates MMMX-KIAH
34971740 - Alert specified BAW1138 VABB-EGLL, actual flight number appears to be BAW138
34961264 - Alert specified BAW1194 VABB-EGLL, actual flight number appears to be BAW194
34970677 - Alert specified ABW4426 ESGG-EHAM, there's no recent flights that match this alert.
34956144 - Alert specified UAL5270 EGPD-EGLL, but flight operates KSEA-KSFO
34955059 - Alert specified UAL5270 KATL-KDAL, there's no recent flights that match this alert.
34953986 - Alert specified THY6590 KIAH-LTFM, but flight operates KIAH-LTFM
34958368 - Alert specified DLH6941 KCLT-KATL, there's no recent flights that match this alert.
34958363 - Alert specified UAE9962 KIAH-OMDB, but flight operated KIAH-EHBK