NumG

No questions asked locksmiths are the best (if you’re no thief)

True. That’s not something you want. Could use that downtime for extensive maintenance to roll out a more robust system (they are probably even working on that already in the background). For the end user it doesn’t really make a difference if down because of DDOS or because of maintenance I thought.

Go offline a couple of days until they are losing interest in DDOS’ing? Would that work?

If it’s just the ntfy app that sends these alerts it should be easy enough to send the developers of that app a feature request to implement a sleep mode which can be scheduled to mute the notifications.