Hi Dory,
Sorry for the inconvenience, it seems like a simple misconfiguration in your RTP account settings.
I have changed this configuration for your account and now the limit is 30 segments and calls to action.
David, in RTP we define segments differently than how we do it in the Lead Management tool.
We use segments to define specific target audiences you want to engage with (the "WHO") similar to smart campaigns in the Lead Management.
Then, you can create a call to action (the "WHAT") which will be displayed once someone matches one of your target segments on your website.
For more information about how to create RTP segments and campaign, check out our documentation on:
https://docs.marketo.com/pages/viewpage.action?pageId=2949141
Let me know if you need any further assistance.
Yanir Calisar
Tier3 Technical Lead