I've started having trouble with touchid. I see 6.3 was supposed to fix some bug with this, well, it does not for me. I run the 6.3 app on IOS, and, it asks for my touchid, I provide, and, it goes right back to asking me again. It shows that unlock screen where you can type the pin in, and, that's the only way out of it. This happens on an iPad Pro. So, I am already using 6.3, and, tried a few obvious things like turning touch id off and on within Textastic. Obviously, not an insurmountable issue, just annoying. I might try turning off passcode lock entirely later when I get back, and, turning that back on.
Customer support service by UserEcho