Hi rrg6832,
Please check with your attorney whether check got encashed or not.. I see Vermont service center generated receipt number until May 3/4 ,2017(receive date)
Example:
On May 3, 2017, we received your Form I-129, Petition for a Nonimmigrant Worker, Receipt Number EAC171535XXXX, and sent you the receipt notice that describes how we will process your case. Please follow the instructions in the notice. If you do not receive your receipt notice by June 2, 2017, please call Customer Service at 1-800-375-5283