How do you put characters that you have already made into a campaign? I know you can make a character from the campaign screen or start a new campaign from the character screen, but I can't figure out how to link an existing character into a campaign. Any help is appreciated.

I'm not certain if there is a better way, but if you copy the "Join this campaign" invite link into your browser, it will prompt you to select a character.

That solved my issue. I thought the link was just invite others, I didn't realize it allowed me to choose my own characters. Thank you