Hi Dominika,
We have lowered the file size recently, in an attempt to keep the server up. It has very low computational resources so really should be used to test smaller files. I would recommend downloading the application locally:
1. Download R and RStudio - How to. Note R version must be >= 4.3
2. Intall the package via Bioconductor
3. Run the app by typing "MSstatsShiny::launch_MSstatsShiny()" in the console.
In the meantime I will update the documentation to reflect the new upload limit.
Best,
Devon