Can't Create More Than Two Campaigns

I'm wanting to create a third campaign without deleting my previous ones because they have some precious memories attached them, however whenever I try to create a third campaign, I'm never able to edit the character sheet. I'm able to access it, but not do anything further. Is this a limit of normal accounts? Is there a way to archive campaigns if that's the case? Thanks!

Is your previous game using a custom character sheet? If you do not have Pro, a character sheet is not editable. Are referring to the choice/deign of the sheet itself, or editing the contents of the sheet in  game. This should always be possible for the creator, regardless of subscription level or number of games. What sheet does your game use? Are you the creator of both old and new games? If your previous game using a custom character sheet, and you do not have Pro, the character sheet's design is not editable.

OH! That wasn't my issue, but I realized that I forgot to click the 5e character sheet when making the campaign. Thanks for helping!

Glad you got it worked out. The "I'm able to access it" statement is what probably confused me. I assumed from that that you were able to see the sheet (not just the journal that holds the sheet).