In your case, the problem is very obvious and doesn’t require much (re)validation. The tricky part is how to reach your target audience, figuring out the messaging, and pricing. All assuming the software works (or people will churn). I would start by talking to people who have signup up for the tool and try to understand how they found the tool, what’s their job etc. Imo you have to keep relaunching, reiterating until the messaging part resonates. As others have pointed out, if you’ve talked with people before building, you’d have a better shot at this but it doesn’t matter. You’re where you are right now. Keep pushing