Trouble Accepting Quest Rewards

My main character is Luque Ninetails on Goblin world. I believe I logged out of the game in Limsa Lominsa on the night of Thursday, August 29. Although I tried to login over the Labor Day weekend, I was unsuccessful after multiple tries. Prior to logging out on 8/29, I had two quests active in my log. The most current one was "On to Summerford," with my Arcanist class quest, "What's in the Box," below it in my log.

I was able to successfully login again yesterday afternoon, September 3, prior to maintenance. I decided to finish "On to Summerford," but, when my quest reward dialog box popped up, the "Complete" option was grayed out/unselectable. I thought this must be related to the upcoming maintenance. The checkmark still appeared over the NPC's head, so I spoke with him again, and the cutscene for the quest replayed itself and the dialog was displayed once more. Again, the "Complete" option was grayed out.

Upon updating and logging back in today, I encountered the same problem with "On to Summerford." I thought if, perhaps I finished "What's in the Box," maybe that would resolve my issue with being unable to complete "On to Summerford." I completed "What's in the Box," but, when I returned to the Arcanist's guild to finish the quest and claim my reward, I received the same problem that I had with "On to Summerford" (grayed out "Complete" option in Quest Complete dialog).

I searched the Support Desk and couldn't find a question related to my problem, so I filed my own. I was contacted by a FFXIV Support Team Member and directed to submit my problem here.

Obviously, this is impeding my progress and, hence, my enjoyment of the game. Any help would be appreciated.

You have to manually select one of the quest rewards. They're not all given to you.

Thank you for providing information concerning your troubles accepting Quest Rewards.

Unfortunately, the amount of information provided is insufficient to conduct a thorough investigation of the issue and replicate the matter on our systems to resolve it.
For example, there is no information about what system you are currently playing on.

Before I can submit your report for further review, if you could please refer to the Welcome to the "In-Game Bugs" Forum! (READ THIS FIRST) to find out what additional information we need in order to investigate. Please refer to these Windows errors and PS3 errors templates and use them as guides to clearly provide the important information to us.

We look forward to receiving additional information from you, so we can further look further into this error and take measures to resolve it to improve the experience of playing the game.

Thank you for playing FINAL FANTASY XIV: A Realm Reborn.

-SQUARE ENIX Moderator