Cath Palug crown could not be obtained

[Kaibatsu]

Operating System:
Windows 10

ISP:
Comcast

Type of Internet Connection:
Broadband

Internet Connection Speed:
359.6 Mbps download, 12 Mbps Upload

Date & Time:
28/07/2022 at about 8:29 EST

Frequency:
State how frequently the issue occurs. Please select from the following.
3. Once (did not reproduce)

Character Name:
Kaibatsu

Race:
Race of your character when the issue occurred.
Mithra

World:
Lakshmi

Main Job:
WHM (White Mage)

Support Job:
SCH (Scholar)

Area and Coordinates:
Area and map coordinates where the issue occurred.

Party or Solo:
Party, three members.

NPC Name:
None

Monster Name:
Cait Sith

Steps:
Detailed steps on how the issue occurred.

High-Tier Mission Battle Field - Champion of the Dawn - fighting Cait Sith Prime

Cath Palug Crown was rewarded

The chat log then went as follows:

Kaibatsu's lot for the Cath Palug crown: 844 points.
Kaibatsu's lot for the copy of Rem's Tale, chapter 6: 628 points.
Nebo's lot for the pluton case: 930 points.
Kaibatsu's lot for the copy of Rem's Tale, chapter 9: 541 points.
Nebo's lot for the beitetsu box: 154 points.
Kaibatsu's lot for the copy of Rem's Tale, chapter 6: 169 points.
Nebo's lot for the durium sheet: 820 points.
You could not obtain the Cath Palug crown. Either your inventory is full or you can only hold one item of that type.
Kaibatsu obtains a copy of Rem's Tale, chapter 6.
Kaibatsu obtains a copy of Rem's Tale, chapter 9.
Kaibatsu obtains a copy of Rem's Tale, chapter 6.
You do not meet the requirements to obtain the Cath Palug crown.
Cath Palug crown lost.

I had inventory space open to receive the Cath Palug crown and I do not have one already.

https://photos.app.goo.gl/Y8XRVZumNCs4S4nU6