Recruit a friend Campaign reward issues

Date of issue: ongoing from recruiting till today
Time of issue: ongoing till today
Frequency: reward not recieved
World name: Zodiark
Character name: all characters.
Retainer name: n/a
NPC name: n/a
Monster name: n/a
Class/Level: n/a
Party or solo: n/a
In-game time: n/a
Area and coordinates: n/a
Housing: n/a
Steps:
1. Did the recruit a friend campaign
2. My friend has subscribed for 990 days
3. I have only received the reward for up to 150 days.
4. My mailbox has 1/20 personal letters, 1/20 reward letters, and 0/10 GM replies

Connection Specs
- Broadband - Sky.
- Sky modem

Model Number of the PlayStation®4 You Are Using
- Model Number: CUH-71168

Reported to Mog station as i thought it might have been an account issue but they referred me here.
Reference from Mog Station support: t9879353:f739

do you possibly have another friend that had subbed for that amount of time already?

I have only referred the one person. He showed me his subscription days so I'm rather certain it's correct.

I had taken a break for a while, pretty much two years. When I came back I got the rewards which were late, for 90 and 150 days. It reminded me of the promotion, hence why I'm chasing.

I did try to refer a 2nd person which didn't work out. I guess there is a small chance the two are mixed up but my friend is my best friend and we started playing together. I'm pretty certain he used my code and so is he.
Unfortunately I can't check who my referrals are, just the fact I have one. But SE can verify please and push the rewards to me if I do qualify.

SE support confirm my friend has subscribed for 990 days with email:

"Greetings,

Thank you for contacting the FINAL FANTASY XIV Support Desk.

We are sorry to hear that you didn't received the feathers after your friend subscribed for 990 days.

Please note that the issue might come from your inbox being full.

However, if you believe this is a bug, then we advise that you visit our official Bug Report forum which can be found at the following address:

http://forum.square-enix.com/ffxiv/forums/632

Thank you for your understanding and we apologise for any inconvenience caused.

Best regards,

- The FINAL FANTASY XIV Game Master Team"