Link
minecraft://openStore/?showStoreOffer=bd0fbb5f-cf5e-4e0b-8e4c-b01007adaa0b
is broken.
To reproduce, go to purchase page
https://www.minecraft.net/en-us/realms-plus
click "get realms plus" button.
Expected: option to purchase realms plus.
Actual: broken link
On firefox, the link "wasn't understood". On chrome, there's a dialog to "open xdg-open?" with a "open xdg-open" button, which does nothing.
This was allegedly fixed in
REALMS-2876
but isn't. Filing this new bug because I don't see means to reopen realms-2876.
Realms Plus is exclusively for the Bedrock Edition of the game, which is not available for Ubuntu. Please instead have a look at "Realms for Java Edition".