During due dilligence period, you should ask for the credit for the repair with such words: ask for $xxx repair credit, or we will terminate the contract.
similiar word like that.
where is your agent? how much is the deposit?
Or try your best to communicate to seller agent to explain that you don't understand this, and take it for granted that the contract is terminated because you didn't reach agreement on the repair credit.
Do you have finiancial contingency, if yes, try terminate using that contingency. like you had trouble to get a loan.