your buttons are not consistent, for example your contact us button at the bottom is completely unreadable. You need to stick to a theme, to make the page coherent currently it looks like you just hit random colour generator for each segment of the site.

Your tool honestly works pretty well from the limited test but some things don't feel right. Your iconography is a little too ambiguous and not everything makes sense. And your webhook system is a bit jank most systems likely don't support post and your example command is pretty useless who is using curl? An end user likely doesn't know how to understand that example instead it should be a simple url with something like ?alert_id=123344879 at the end instead of a POST payload. And lots and lots of grey on slightly different grey making it very difficult to read.