You are not supposed to delete the log file, instead you should have uploaded it to any file sharing website (e.g. dropbox, google drive, microsoft drive, ubuntu one) and then have provided the link to the developer.

Now I suggest that you use yappari as normal, and wait until you fail to receive a photo, then upload your log.

I am not sure what your problem is, but I have a hunch. Try to register again at a time where the network usage is low (eg. late at night, very early in the morning). I used to have a problem with facebook sms verification, where the sms would arrive hours later during the day, and only within few minutes during the night.