Registration Code Problems

Alright so here's my dilemma. Was recently playing on xbox360 with the ROZ, COP, and ToAU expansions.

Got a new pc, so I did the direct download of the Abbysea Collection using steam. Now I can't recall off the back if it asked me(when installing the POviewer) to enter my registration code before doing anything, but I was able to install the game and do all of the updates and now I got it working on my PC. Anyways, the problem is, its exactly the same as when I was on the xbox, have only those first 3 expansions, and I know for sure I haven't entered the Abbysea code anywhere.

Another problem is going to the "obtain ID" section of the viewer, I can't enter the registration code for my expansions like I was able to do previously. It now redirects me to the new square accounts page where i find nowhere to enter my code.

Any ideas? I wanted to call the support center, but they are closed on the weekend :/

On the SE page at the very bottom of the menu to the left there is "Service and Options." Click "Select Service" and Final Fantasy XI. From there you should be able to "Add a Service Account" and you will be able to add your codes.