Missing SRTM squares

Hi,
I'm new to WW.

I noticed that where I live I can't get the 3d elevation. That srtm tile is just flat.
Does anyone know if this is the data on the server (missing?) or if it is something I
could be doing wrong?

If someone would be so kind as to check if they get elevation data for this location?
location: Stellenbosch, South Africa
Lat. -33.94, Long 18.87 (approx)

Thanks!