Translation of rectify in Spanish

Since Joseph is convinced of the coming success, he suggests to leave the machine in Canada for another 2 months (at no cost of course!). I think that they learned a lot through your project.
I just saw the Arsenal match. It was very boring and the atmosphere in the stadium was weak. I think that it was mainly due to the cold and not due to the quality of the game. But it was worth it.
I connected to a group of people and we played some volleyball, had some drinks and they told me a little about the place and the country in general. I returned to the hostel and took a cold shower.