Seller keeps asking for extension what are my option

[Matt Arden]

I am purchasing a property from a whole seller that locked up a property on the MLS and then I purchased it from him I signed all the docs and wired the escrow money to title company 5,000 non refundable on time signed all the paper worked and had everything they needed on time. That was back on July 10, we should have closed in a few day but the contract was until July 28. I signed an extension for August 14, see the seller are in another country and they are old they are scared to go to the embassy and sign the docs because of covid-19. My question is do I have to sign the extension and can I get my money back from the title company? I live in Florida. Or Can I say I will not sign the extension unless we renegotiate the purchase price. If you need any other information Please let me know Thanks.