You're able to add text to your Donation Confirmation page, so that you can customize what donors see when they complete their donation.
This gives you the opportunity to personalize your thank you to donors.
You're able to add the post donation text by following these steps:
Step 1: Under Campaigns, select the Settings of the campaign you wish to edit.
Step 2: Under Sites & Forms, select your donation form.
Step 3: Select Post Donation Screen from the left navigation and enter the success screen message Save. You can also add a redirect URL to send the donor to another web page after they close the form.