If you are experiencing app crashes or broken features, you can send technical feedback directly to WhatsApp. Go to > Help . Tap Help Center or Contact Us .

The "94fbr" string is not an official part of WhatsApp. It originally gained fame as part of a product key for Microsoft Office 2007. Over time, internet users discovered that adding "94fbr" to a search query (like "WhatsApp 94fbr") helps filter search engine results to show sites that offer software for free or with modified features, bypassing standard security filters. Features of Modified WhatsApp (MODs)