Linux 1.8R5 - Valid layouts in CMS - Invalid on player

Today I did a fresh install of Xibo and I am unable to publish anything to the screen. The splash screen is the only thing that will show.

One thing I notices that may cause this issue is that the layouts are marked as invalid in the Player, while they are valid in the CMS.

The display itself has the status “Display is out of date but has not yet checked in with the server”. It is shown as authorized and logged in though, not sure how I can get it to check in.

Would you be able to point me in the right direction to resolve this? I’m working with:
Ubuntu 18.04.4
Xibo Player 1.8-R5