Only certain updates trigger an alert with EX/EQ.
TU does alert sometimes on FICO score changes but the other two in my long experience do not.
Balance changes are the most reliable, deletions basically not at all; EX occasionally gets a refresh via SP: that was implemented because their alerts were shoddy.
Same occurs with their CMS incidentally, I am using Experian now and I get alerts a day or even later than when the actual daily report shows it.
Sadly no CMS is as good as they should be but they weren’t written for us.