Seeing as this has still been problematic, this is an available workaround
This will give you access to the landing challenge while waiting for the sim to see you’ve ‘met’ the requirements.
Go to your main MSFS folder->Official->OneStore->fs-base->widgets and make a backup of WidgetsHomepage.xml.
Open WidgetsHomepage.xml and delete the following;
Then go to this line and change “FALSE” to “TRUE”
and it will give you access to the challenge.
Once you meet the regular conditions though, that section of the home menu will simply go blank, at that point just delete the modified file and restore the backup file.