There is a little info on the module for future tense here on Duolingo (at least if you access from a computer), but The Local has some info too. Otherwise, just google "Swedish future tense" or something like that. It's a bit complicated and you're not the only learner to be confused.
Inte is in the wrong place; in main clauses, it should come either right after the verb (in third position) or after any pronouns that appear directly after the verb, if I remember correctly. However, gå was included in their suggested translation when I got this wrong earlier. Also, I doubt ska makes sense in this sentence, since that would imply that whatever "it" is that won't work is making the decision not to work.
Can I use "ska", implying that I (or even someone else) will prevent it from working ?