I am trying to create a buffer of 10 kilometers around each dot already uploaded. The problem is that these buffers seem to be unreasobly larger than 10km. (Portugal). I have tried to use multiple multiple CRS but it doesn't work. Some people suggested to save layers as .shp but I can't see how to do that (maybe there was an update?). I have been using EPSG:4326 - WGS 84. I have tried some others and couldn't solve the issue.
I have read multiple suggestions in other Questions but couldn't solve so far.