Hi there,
Thanks for your invitation.
You made your contest as a draft one. Can you please remake it as an open contest so that we can submit our designs?
Thanks and regards

Hello and thanks you for accepting my invitation. I spoke with customer support about this issue and it seems I invited you while the project was still in the review process. I was assured all is good to go now and that the project is open for design submissions. Thank you for bringing this issue to my attention.

Hello,
Possible feedback on my design would be muchly appreciated.
Thanks.

Hello, could you please review my design? I need feedback to improve it and to give you the best options, before the ending of the contest. Editings can be easily made, but feedbacks are mandatory to obtain the perfect logo. Best regards

Waiting for your valuable feedback.