Are my posts invisible or something?

Don't know how it is in other countries, but I would definately recommend doing all 14 in one period.
Not sure if this is a Norway CAA thing, but if you split them, you can't take the ones you failed in the first period in the second.

So say we have 5 exam periods during the year, you do 7 of them in November, and 7 of them in February. That means, if you failed 1 in the first 7, you would have to take that single one in a 3rd exam period in say May.

About 90% of the students I know of are taking all 14 in one go, and about 50%+ pass all of them on the first try, the rest pass the ones they failed on the 2nd period. Making this way of doing it a 2-period max, unless you really **** something up