Entered into a solar PV installation contract with a event center business owner in August 2019. Permit approval took unexpected delays. Permit issued around 3/25/20. Customer paid milestones for: 1st = Design and Engineering and 2nd for Permit Issuance. Customer is concerned over event cancellations due to COVIT-19 and has asked to put things on hold. Possible cancellation of contract. What am I responsible for in this case? Am I to refund any part of the fees paid?