This happened to me last week and I was on June 24-30th, I paid them 18k. The car EDD then jumped to Sep, Tesla stated it shouldn't have happened and are now refunding me. Taking 10-14 days to get the money back in my account.
Do you have a VIN yet?
The Tesla Supervisor I spoke to was amazed I had been given the bank details for the transfer given no Tesla or VIN had been allocated to me. If you are okay with the money being out of your account and the Edd moving then you can pay but given they shifted mine I wasn't comfortable especially as the finance offer may expire