Last semester, we had nine classes in the es.wiki course extension. There were two problems. 

1) as I am the only one (so far) with the permission/flag to create classes, I have to add the (real) instructors as instructors, rather than creators. This means that they cannot add students to their own course.

That would not be such a big deal if not for ....

2)  The link that is generated for students to enter and add themselves to a course sometimes works and sometimes not. It seems to be a problem with the use of accent marks in words in the url. I thought by changing "Tecnológico de Monterrey" to "Tec de Monterrey" as the institution name, Id be able to eliminate the problem. However, unfortunately the url contains the word "inscripción" (registration) with an accent mark.

I just created a course for teacher training from now through next semester with the inscription here http://es.wikipedia.org/wiki/Especial:Inscripci%C3%B3n/Tec_de_Monterrey,_Campus_Ciudad_de_Mexico/Capacitacion_de_profesores_()​  and tried registering under my account, which worked. But when my husband tried on his computer with his account he received a message saying that the site does not exist. Another teacher has emailed me with the same issue.

All language classes on three campuses are being asked/required to do something with es.wiki or Commons next semester. That is a LOT of classes and even more student students even if only a third of them work with es.wiki. I dont see how I can set up everything for teachers and students on the course extension. I have a request to get permission/flag at least for the teachers who worked with wiki last semester (https://es.wikipedia.org/wiki/Wikipedia:Tabl%C3%B3n_de_anuncios_de_los_bibliotecarios/Portal/Archivo/Permisos/Actual) but es.wiki right now requires applicants to hav significant editing experience, not just experience supervising students.  No answer yet on whether it will be approved or not.

I guess this is a bug but I have no idea how or to whom to report it.