Actually since version 1.1 we have included a new class dedicated to conflicts resolution. So that even if a plugin is not including its own scripts correctly and may cause hell in wysija. Wysija will work.
When a plugin is widely used like ACF we include a patch for it.
We did the one for ACF very recently for one client and it is not yet included in our package as we don’t want to create another version too early.
Though I can provide you a link to that patched package.