Verb conjugation of "tester" 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.
According to the user's success and failures in the placement test will give us the information where to start the drills for each users. Please note that some general parameters that are not user specific may also be involved in the decision engine.
I am 73 and I am learning German because my grandchildren do not speak English. I am learning at the Goethe Institute in London. One last question: why do you want to learn Spanish? Many greetings.