Verb conjugation of "préserver" in French

The picture I sent yesterday was taken on the first evening. And this morning the email bounced back. The user has already uploaded 3 different pictures of himself, all with the same facial expressions.
The system will collect information about the learning behavior and guide the user through a tailor-made process that is best suited for him. This technique is not entirely new but we are redesigning the whole concept of it.
What do you think about your job as a teacher? Is it difficult? Of course we can talk via MSN. My name is John and I live near Stuttgart. This is in the south of our republic.