Yesterday I could collect nearly all gifts, today the problem is back. Got only the first 25. I did what you told me, collected 25 items one at a time, and after I got the first 25 I refreshed the game, but the requester didn't came up. I lost again more than 400 gifts since yesterday.
I have no idea, why I could collect without any problems yesterday and today the problem again.
I'll try to collect the next days the way you told me.