My skills won't strengthen!!!
I am trying to strengthen my skills in French, many of which are on 4/5. Today, even if I get a perfect 20/20 in the practice questions, they don't increase. I wasted so much time trying to get them high again. I'm doing Portuguese as well, and I have no problems with those skills.
Sometimes, a skill simply might become "stuck" (after doing multiple practice sessions, it doesn't strengthen). Try redoing all of the lessons in that specific skill; that seems to sometimes work.