Plugins not showing up in elements

Hello, I’m new to Bubble.io. I’m trying to add a drop down input element (so when I type in a person’s contact name, it would use the Google People API to call a search and find and import that contact.) Under “Input forms” I clicked “Install More”

I then installed several drop down plugins:

But none of them show up in my “Input forms”. Do you know why?

I’m on the free version so not sure if that has an impact.

were you able to figure it out?