I never got paid my 700 either for this same offer. To add the support person said they manually credited me after I sent in pictures showing I fully completed the offer and after checking ive still not been paid the 700 platinum for the offer I have completed.
There was another person that had this very same issue with this specific offer. Not sure if they got their platinum or not.
Ive supplied numerous pictures showing that ive completed the offer fully and I even still have the app for it. Also ive supplied a picture showing that ive still not been paid the platinum.
To add this isnt the only offer ive not ben paid for but this is the largest payout of offers I havent been paid for completing.
Please fix your payment system as it is broken to say the least unless it being broken was done on purpose?