Several factors can contribute to your inability to save a project, Kim.
To assist you accordingly, have you received a specific error message when trying to save the project? Sharing more details can help us provide precise assistance regarding this.
Please note that we need to fill out the Project name and select the appropriate Customer when creating a new project. If the Address for this project section is enabled, the Billing address should also contain complete information. Otherwise, you'll receive an error notification preventing you from saving it:



Aside from that, you'll also get an error when you try to save a project with a similar name to an existing project:

I suggest entering a different Project name or adding a special character to bypass the error in this scenario.
If the issue persists, I recommend clearing your regular browser's data, as this can impact the platform's performance once it gets outdated. You can also consider using another supported browser to isolate the issue.
If you've received a different error code from what I've shared above, please let us know by clicking the Reply button.