Burning Shores HOW to Access ???

Hi Team.

This is driving my Wife and Me nuts. We have HFW Installed of course, (the PS5 version), have played the entire game then at Xmas decided to install the Burning Shores DLC. Yup, bought & downloaded it. If I go to the PS5 'home screen' and flick the left toggle down/down and then I get the Burning Shores menu item. If I clik into it it says "Installed".....

So in theory I'm good to go........Ok so we started HFW from the beginning and did the basics, and a 'few' other mini parts, and then the Singularity of course. Finished this and then waited for F'n ages and we got the credits......I even waited forever for ALL the credits to roll but still NO BURNING SHORES.

Can some one PLEASE help......

What are we missing ? Are we supposed to have completed every single quest/side quest/errand and all the 'question marks' on the map and then the Singularity in order for BS to install or what ? Or having gotten to the point we're at having completed the Singularity how the F do we get Burning Shores to load.

Goddam it shouldn't be this hard.