I am using bio lockdown right now and tried having the messages app locked. As soon as I open QC and choose which person I want to text, biolockdown prompts me for my fingerprint, but at the same time it completely freezes my iPhone. The only thing that clears it up is restarting it with home/power button. It wasn't like this with lockdown pro and bioprotect. The only time I was prompted for my fingerprint with those two tweaks is when I press on the messages icon in the top left to open the actual app.
This is really annoying. I know it's an issue with biolockdown and not couria since it works with the other two lockdown tweaks I've used. But now I can't lock my messages app.