Hibernate

hello, i have the following problem. i use the enpass pro verison with my iphone and touch id... it works great but i found a small "bug", which is very annoying... when i start the app, a dialog prompt with touch id, its works without problems, but when the iphone locks itself after a while, the touchid doenst work anymore. i need to type my password. i think the app try to prompt the touch id automatically and failed after locking.. so a better solution is to create a button to force touch id after unlocking.. thanks