Newly Installed not showing ingame
I installed a new pack but I can’t find anything in my game and the world of the pack is greyed out. The game shows as installed in EA app.

Cause
EA app still installs new packs but the are disabled in the game since the marketplace update. They won’t appear in the game because of that. This is a bug.
Solution
You need to manually enabled them to make the packs appear in your game
Steps
Start the game
Click on the Marketplace banner on your main menu

Click on My Collection > Pack Selection

Find the newly installed pack and click on the check box in the upper left corner o make sure the pack is activated and then click on Confirm.
If you installed multiple packs it’s easiest to click on Select All. That selects all packs of the current pack type.
More details on how to enable/disable packs can be found here: Disable Single Packs

Restart the game when prompted to do so.