Sorry, I don't understand what you tried and what the problem was. The situation is fairly simple.
1. Add a text field and call it FormTitle.
2. Create a rule that sets the value of this field to now() when the form first opens.
3. Use the FormTitle field as the form name that is used in the data connection that submits to SharePoint.
Can you try this, and if you run into problems, attach a screenshot for easier troubleshooting? Thanks.