Top chart? or the market depth chart?
Top chart
It has to do with BFXdata not being SSL (https) and tradingview is. I'll fix it in the next few days. You could try using a different browser (chrome, firefox) for the time being.
Could you check if you still experience the issue you described? I have added SSL to BFXdata.com. You may have to clear your web browser's cache. Please let me know if it is resolved.