CertiK audit is required to attract new investors and if PolyDEX doesn’t have funds at the moment the team can ask the community to vote if most of the community is happy to say yes to stop sharing rewards for a day or two if required even for a week maximum and use those reward funds to get the audit done. Share with the community openly how much fund is required to get the audit done and how many rewards are needed to fund the audit. This is very good for the long run of the project.