Plot that GPS location. No satellite data can be found. In other words there’s no visualization for NDVI,NDRE or NDWI. However I can see the data on your dashboard but not the one I output to my end user
First issue I see is that you have MAXCC=20 hard-coded in the call, which means that you are filtering out all scenes, which have more than 20% cloud coverage. As you are interested in tropical areas, there are usually lots of clouds. If you change this to MAXCC=100, you should get the data.
See also this link for more information about cloud filtering:
If you want to create a multi-temporal mosaic, check this script: