Need help with https://www.eve-skillplan.net/

Hi Eve Online,
I used https://www.eve-skillplan.net/ for first time. I tried to learn how to use it quickly. My situation is that I have 2 characters, I went to add them both. Maybe it did not add them or update the data yet.

Maybe I need to be patient. The window to manage a character only shows one of the two characters I have within that one account.

I made a plan to train a Proteus. It was hard switching to the game and then trying to find the skill in the planning section to add to the plan.

So if you could help me have the https://www.eve-skillplan.net/ show up my two characters in the main choice screen for manage characters, Help me find the steps to do it.
Thanks for your time, effort, and experience