This question already has an answer here:
First of all I'm a complete noob when it comes to QGIS so maybe thats the reason why I cannot find anything on this on google (or is this due to the 2.8.1 compatebility issue?).
My issue is that when I create the heatmap the location of the heatmap is off compared to the data. I've checked the CRS and all match (project CRS, data CRS AND the heatmap CRS). I've redone several tutorials several times and started several times from scratch but somehow it keeps giving me the data on the wrong location :-(.