Addendum (07/08/2022): We have released patch Ver.10.0.3.0 to address this issue.
We apologize for any inconvenience this may have caused.
We have confirmed the following issue in Ver.10.0.2.0.
Symptoms 1. If you buy DLC on the Steam Store during gameplay in Ver.10.0.2.0, a message will appear that states "Returning to the Title Screen, because there has been a change in your ownership of add-on content. Do you wish to save?" taking you back to the title screen.
*It may be difficult to select Yes or No when this happens.
2. You may temporarily lose your right to play Monster Hunter Rise: Sunbreak, even if you've already purchased it.
(You may temporarily not be able to use your previous save data containing the added elements that require the right to play Monster Hunter Rise: Sunbreak.)
What to do if you run into this issue: The issue can be solved by rebooting the game.
How to avoid this issue: We apologize for the inconvenience, but please make sure that you are not playing the game when purchasing DLC on the Steam Store.
We are currently working on a fix to address this issue.
As soon as we've made progress, we will send out another notice, so please wait for further information.
We apologize for any inconvenience this may cause.