Alerts stop working randomly?

As the title says, what is it with the alerts? They function as intended for a few triggers then just outright stop and will not function again no matter what I do. I have to delete them and remake them which is pretty frustrating.

Is there a fix to this?

okay so it appears that my “price crosses above/below VWAP” has been working consistently for the last 12 hours.

However, the one I really want to work is a simply horizontal line that I have 2 of. If price crosses above one, I want an alert, if price crosses below the other horizontal line, I want that as an alert. However, I moved these lines as price action moves - I am wondering if maybe moving the horizontal lines is what somehow messes up the alert?