2024 Tax Data File Disappeared!

Finished my 2024 return and was preparing to e-file. e-file failed saying Turbo Tax needed to be updated first. Completed update and now my 2024 return data file is completely blank as if I had never started it. Beyond frustrated and I see I am not the first. Is there anything to be done other than start all over again? (System used is iOS on Macbook)