Stuck in loop at title screen; gamertag visible

The game launches and gets to the title screen. However, at that point, clicking the start button just goes back to that screen over and over again. VIDEO

Also, please note that the only way to end the game is for me to use alt-tab-delete + end task. Using the escape key does the same thing as hitting the enter key.

I've heard of others being stuck at the login screen; however, I was told that this issue was unique because my gamertag IS visible in the lower left, and the button does work ..it just never goes anywhere.

Anyway, has anyone seen this or have any ideas?

Thanks.

I forgot to mention that I've tried installing/uninstalling PSO2 three times. The first time was from the Windows Store (which didn't launch at all) ..then the second time was from the PSO2 Tweaker online and then the third time was from the XBox app. Both the second and third installations had the same results as described above (and that is shown in the video.)