As Landrvr1 content can only be sent by email, it may be worth doing a search for landrvr1 using the forum search and contacting one of the people who has the content you require.
The alternative is to state which content you want then contacting whoever responds that says they have that content.
That information will help although it looks like N3V may need to sort your timeline out as well (usually Helpdesk). I haven't personally got any landrvr1 content but I know quite a few people do.
Yet it clear does not show up next to your name (yet), so I suggest you contact the Helpdesk to get that fixed. As long as it does not show on the forum, a lot of people will not take your claim seriously and are a lot less likely to help you with any requests.