people fail to comprehend what they read continually.
It says very clearly in all powerplay pledge screens that the requirement to unlock is you must be at level 3.
if you defect you are very clearly no longer at level 3
if you don't keep your merits up to 750 per week, again you are not level 3
if you are not level 3 you do not qualify for the bonus rewards plain and simple.
if you had bought any of the modules, they would be yours to keep, you did not buy any so you only have yourself to blame for not getting any.
I would like to know what you did for the 4 week wait, did you gain or lose any merits? did you happen to notice that you got paid from them, did you notice the amount of merits got smaller after every pp weekly update? if you answer yes to any of this then did you re-read the pledge screen to see how or why this might happen?
this is stated clearly in the game and in various threads in the forums.
file under failed to read and comprehend, nothing more.