Welcome, @Raquel_Neres
Look under User → Visualizations
The data will take variable time to render … and the “Please wait…” message will appear on the left side of the window. Let that complete to see the graphic.
Which web browser you are using shouldn’t matter too much since the data is server side. Safari, Chrome, and Firefox are good choices. Avoid Internet Explorer. Make sure cookies are allowed (that is how Galaxy “knows” that you are accessing your own data, so privacy reasons).
Reference: Label-free data analysis using MaxQuant
The GTN is hosting a training session all next week. Everyone is welcome to join to interact with the authors and trainers. It is fine to still register. Smörgåsbord 3: A week of Free, Online, Galaxy Training supported by the Global Galaxy Training Community