Hello,
Are you referring to just the coupons, or to all season rewards? Can you please clarify your situations?
Thank you!

Hello,
Are any or all of you part of the June 1st server merges? Also, still provide me with more information and clarification about your situations. I.e., rankings, points, whether you are only missing coupons or are missing coupons and other rewards, etc. As much information as you have, please.
Thank you!

Hello,

This section applies to user >Deidara> and others not on the June 1st server merges.

The issue affecting you is most likely the one answered in this thread. Please follow the directions there. Thank you!

https://forum-narutoen.oasgames.com/page/show-post-46791-1.html

This section applies to those that are in servers merged on June 1st.
First of all, thank you for your patience while I looked into this matter. I know that this is very frustrating situation, especially since season rewards are a culmination of literal months of hard work, so it is appreciated, that you all take the time to be polite and courteous instead of insulting and overbearing!
In regards to the situation, there is/was an unfortunate and unexpected interaction between the server merges and the end of the spring season event. The way the season events work is that they require a player to log into them one time before they are marked as "active" for that season, and that is a per-server recognition. This means that when all players were merged into a single new server, none had yet been marked as "active" for that season unless they were able to check into the season UI between the time that the server merger maintenance ended and the server reset occurred (except, possibly, for those on the hosting server, who are likely not speaking up about their good fortune about jumping up in the server ranks). This is just a quirk in how the season system is designed. You may have noticed previously that none of your actions in game have counted towards season rewards until you checked into the Season UI system by clicking the green link the first time during each month on the right side of the screen. This is the same thing.

I have been informed that Customer Support will be looking into this situation and may give compensation based upon their findings. Regardless, I suggest you put in a CS ticket with your relevant screenshots displaying what I asked for above (showing your ranking when you attempted to redeem rewards, etc.).

Again, thank you for your patience in this matter, and I'm sorry that the server merges affected you so negatively due to how rushed they were with getting them out for everyone.