@Meds75 welcome to the forum!
This has been a topic of discussion on many threads on the forum … this one is from Dec 2022
https://forum.trustedhousesitters.com/t/saved-search-emails-and-notifications-arriving-too-late
Back in Jan 2023 member support confirmed that the instant alerts are sent out hourly not instantly .
Three years later , THS hasn’t changed the advertising which is misleading ..
If this was the main reason that you upgraded , you are entitled to ask for a refund and revert to standard membership .