Do customers flood you with support calls when your service is down? Or is it more or less quiet?
If it’s the latter, you have a problem. Because then all indications are that your product doesn’t really mean much to your customers; they can easily do without it. Maybe they don’t even realize it’s not there anymore.
If on the other hand it’s the first, congratulations. Not on having issues but in having created something important enough for customers to register when it’s not there anymore and even complain about.
It is probably one of the best indications that you have achieved Product-Market Fit.
Of course you can’t rest on the laurels when you’re in a situation, where you product is not performing as it should. But while your struggling to get it back up and working again at least take some comfort from the fact that you have achieved something:
You have created something that matters to someone outside your immediate circle of family and friends.
And now get it back up and working again.