You can participate in a campaign as many times as you want. 

Check your participation history by clicking on “Participations” in the bottom menu.

You’ll see a list of the campaigns you’ve participated in, and the amount of TikTok links you have verified. 

By clicking over the campaign box, you can view a list of your posts:

Please note, if the campaign offers any benefit or reward for your participation, you need to check the delivery directly with the artist.