If you're on the right paid Modal Forms plan you can add in your own branding where the Modal Forms branding would usually site at the foot of every form.
Click the option dots when hovering over your campaign and select
Enter in your brand name. Usually something like ⚡ by Your Brand. Emojis work here!
Next, enter in a link that visitors will go to when they click your brand. This is a great source of traffic. Add in a UTM code so you can see referring traffic.