Verb conjugation of "coffrer" in French

Dear Maximilian, I look forward to your visit in Switzerland. After a somewhat difficult start, it seems that we have increased the website traffic and we are starting to receive more visitors.
Carl said that he would need a private tutor for his spoiled son. My opinion is that sometimes this is counter productive measure as it gives the pupil a feeling of being weaker then the others and may lead to discouragement.
I owe it to my boss who allowed me to make many trips. In Argentina, I've been in many places, but unfortunately I have not seen enough of it yet. It is indeed a huge country, do you agree?