Translation in progress is gone

I'm Trados Studio Starter 2019 version user and yesterday, after more than 30,000 words translated, my list of documents is gone! The translation in progress is gone! It was already more than 70% done. I'm desperated as I also try to put the original word document again, to use the TM and continue working, but almost all 100% matches are EN to EN! And my target language is PTBr. I barely understand where I should ask for help at this confuse software! Please, what do I do?