Airwave VisualRF support Ekahau backup version 10 and above,There is a limitation related to floor dimensions, number of walls.
When we upload visularf image, backed software converts the image in to svg and jpg format and divide floor in to gird cells, it required lot of resources to process this information. Having larger or smaller grid cells will have adverse impact on heatmap display and system performance due to this we recommend to have accurate floor measurements, currently we support 2500*2500 dimensions floor.
Check VisualRF log under system>status for height/width of uploaded floor.
Sample log
HTTP[13] com.airwave.svg.http.BackgroundUtils Generated background and/or thumbnail images for {Site: id=5e2d428d-a860-4ccf-ad94-7434e0643888; name=Floor 3; buildingId=b888ac19-577c-4213-a322-76dfa35aed6b; buildingName=null; ceilingAtten=null; ceilingHeight=null;floor=3.0; numAps=null; env=null; gridsize=null;height=2004.5931789; width=7555.774289700001; ubits=null; dataRate=null; clientXmitMw=null; orientationLocation=null; creatorRoleId=5; envCheck=null lastEnvCheckTimenull;lastApPlacementCheckTime=null}