HI Madam,
Please make your project guaranteed.
We are working on and soon submit our design concept.
Thanks

Hi ,
We have just finished up the design, but it seems that the project is closed. Can you please extend the deadline so we can submit the design.
Thanks

I don't know how to extend it. I just messaged customer service. Do you know how?

Hi,
You can talk with them to extend the deadline. Or you can check your project dashboard, maybe there are some options by which you can extend the project deadline.
Thanks