Images Blurry

We have been having issues with images being set to our sites for IDXBroker were it is only showing a max of 300px x 300px this is making the Gallery images useless and the listing image is very blurry. I have put in several help tickets last we for different sites and have not heard back on this yet. We just received verification today from our MLS FLEX MLS that you are receiving the large images from them so not sure what the issue is. Could you please give som insight as to when this will be fixed.