Need to fix a lot

With the group chat it every once in a while no one can open one snap from one person and it very annoying/frustrating. Please fix this problem. It is not just my friends and I experiencing this, many others do to. And I hate having to delete the app and reinstall it and it still doesnt work till days after the snap was sent.

Nlvix about Snapchat, v10.4.1.0