I recently accepted a new job, but when signing the contract, I accidentally wrote down the wrong signing date. I signed in September but am due to start in July, so I accidentally wrote down July. The process happened through DocuSign, and I now have an electronically signed version of the deed, with a wrong date. I let them know of my mistake and offered to sign a new version, however they just sent me an amended PDF with July crossed out and September inserted, with person making the amendment also signing their initials next to the change. However, this new PDF is no longer electronically signed, since it has been tampered with, and all electronic signatures on the document turned into mere pictures. I now basically only have a wrong electronically signed copy, and a correct not electronically signed copy.
Do I still have a valid contract? I am concerned due to the fact that this contract will later be fundamental to me obtaining my work visa, and ultimately living (legally) in the UK.