Hi there! I understand you're having some trouble logging into the duPont REGISTRY website on certain days but not others. To help you best, could you please share a bit more about what happens when you try to log in on the days it doesn't work? For example:

- Are you seeing any error messages? If yes, what do they say?
- Do the login fields accept your information but then don't proceed, or does the page fail to load?
- Are you using the same device and browser each time?
- Have you tried clearing your browser cache or cookies?

This info will help me guide you through the most effective steps to get this resolved. Meanwhile, a quick tip is to try resetting your password if you suspect any credential issues; you can do that here: https://customer.dupontregistry.com/_hcms/mem/reset/request3.

Let me know more, and we'll take it from there!