Can you see when the person with the op.pl email address last accessed SketchUp?
It was 14 months ago, so certainly not the right person.
Always best to download a copy of your file(s) for what it’s worth, check the data retention policy here:
It might have been deleted…?
it says the data is deleted after 90 days, and its been 31 since i started the project
@mateuszsiwy00 Looking at the model link, I can see that the model was created with an email address ending in “@pw.edu.pl”. I hope that helps.
| @mateuszsiwy00 it took some doing but I managed to find a way to download it from your link here it is  ~~ https://we.tl/t-XhYfjSrNm0y0dfYv |
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It was nice that Adam was able to recover your SketchUp file. I would suggest since you are using the hobby version of SketchUp which has file size limitations that you clean up your model before you do more work on it. I fixed incorrect tag usage and purged unused contnet which reduced the file size by about 53%.
thank you guys so much!!!